Finding the Fourth Proportional to 22,752.38, 31,398.29 and 12,680.58

Step by Step Solution

1. Step 1: Write the proportion equation
   22,752.38 : 31,398.29 = 12,680.58 : x
2. Step 2: Convert to fraction form
   22,752.38/31,398.29 = 12,680.58/x
3. Step 3: Cross multiply
   22,752.38x = 31,398.29 × 12,680.58
4. Step 4: Simplify right side
   22,752.38x = 398,148,559.91
5. Step 5: Solve for x
   x = 398,148,559.91/22,752.38
6. Step 6: Final answer
   x = 17,499.21