Finding the Fourth Proportional to 22,565.30, 31,139.73 and 12,493.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,565.30 : 31,139.73 = 12,493.52 : x
2. Step 2: Convert to fraction form
   22,565.30/31,139.73 = 12,493.52/x
3. Step 3: Cross multiply
   22,565.30x = 31,139.73 × 12,493.52
4. Step 4: Simplify right side
   22,565.30x = 389,044,839.55
5. Step 5: Solve for x
   x = 389,044,839.55/22,565.30
6. Step 6: Final answer
   x = 17,240.84