Finding the Fourth Proportional to 31,785.71, 43,863.86 and 17,638.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,785.71 : 43,863.86 = 17,638.25 : x
2. Step 2: Convert to fraction form
   31,785.71/43,863.86 = 17,638.25/x
3. Step 3: Cross multiply
   31,785.71x = 43,863.86 × 17,638.25
4. Step 4: Simplify right side
   31,785.71x = 773,681,553.42
5. Step 5: Solve for x
   x = 773,681,553.42/31,785.71
6. Step 6: Final answer
   x = 24,340.55