Finding the Fourth Proportional to 22,502.72, 31,053.56 and 12,431.41

Step by Step Solution

1. Step 1: Write the proportion equation
   22,502.72 : 31,053.56 = 12,431.41 : x
2. Step 2: Convert to fraction form
   22,502.72/31,053.56 = 12,431.41/x
3. Step 3: Cross multiply
   22,502.72x = 31,053.56 × 12,431.41
4. Step 4: Simplify right side
   22,502.72x = 386,039,396.53
5. Step 5: Solve for x
   x = 386,039,396.53/22,502.72
6. Step 6: Final answer
   x = 17,155.23