Finding the Fourth Proportional to 22,685.57, 31,300.98 and 13,732.99

Step by Step Solution

1. Step 1: Write the proportion equation
   22,685.57 : 31,300.98 = 13,732.99 : x
2. Step 2: Convert to fraction form
   22,685.57/31,300.98 = 13,732.99/x
3. Step 3: Cross multiply
   22,685.57x = 31,300.98 × 13,732.99
4. Step 4: Simplify right side
   22,685.57x = 429,856,168.90
5. Step 5: Solve for x
   x = 429,856,168.90/22,685.57
6. Step 6: Final answer
   x = 18,948.44