Finding the Fourth Proportional to 22,414.10, 30,935.49 and 12,987.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,414.10 : 30,935.49 = 12,987.86 : x
2. Step 2: Convert to fraction form
   22,414.10/30,935.49 = 12,987.86/x
3. Step 3: Cross multiply
   22,414.10x = 30,935.49 × 12,987.86
4. Step 4: Simplify right side
   22,414.10x = 401,785,813.15
5. Step 5: Solve for x
   x = 401,785,813.15/22,414.10
6. Step 6: Final answer
   x = 17,925.58