Finding the Fourth Proportional to 30,617.92, 42,249.81 and 17,186.10

Step by Step Solution

1. Step 1: Write the proportion equation
   30,617.92 : 42,249.81 = 17,186.10 : x
2. Step 2: Convert to fraction form
   30,617.92/42,249.81 = 17,186.10/x
3. Step 3: Cross multiply
   30,617.92x = 42,249.81 × 17,186.10
4. Step 4: Simplify right side
   30,617.92x = 726,109,248.39
5. Step 5: Solve for x
   x = 726,109,248.39/30,617.92
6. Step 6: Final answer
   x = 23,715.17