Finding a solution is always the hardest part of this sort of essay. I suggest that you follow a three-pronged approach:
1. Ask as many people as you can who know about the problem what their ideas are for a solution.
2. Research the problem and solutions that others have tried. One trick my students taught me is that you often can find a solution that has been tried in a different location and adapt that to your situation. For example, when we had problems with people biking on campus and causing accidents, my students researched a nearby campus and found a solution that had been done there.
3. Look at my "Ways to Solve Problems Chart" on the "How to write a problem solution essay." The chart includes all of the different ideas my students have come up with over the past ten years about how to solve problems. Think about each type of solution and how that could create a solution for your problem. For example, what could you add to the situation? What could you take away? Would changing leadership help? Could money solve the problem, and if so, how could you get the funds?
Finally, when you have some solution ideas, check to see if they are feasible (can you do them?), cost-effective (does the cost seem reasonable and do you have a way to pay for it?), and will this actually solve the problem without creating any new problems?