Dear mathguy20,

Here are the steps to solve this problem.

1) First find the length of BC ; (consider the traingle ABC)

2) Then find the length BD ; (consider the traingle BDC)

3) Now you can find the length BE ; (considering the fact that BD=DE)

4) Find the CE ; (consider the traingle BCE)

5) Finally considering the traingle CFE you can find X.

Hope these ideas will help you.