Finding the Fourth Proportional to 22,801.10, 31,465.54 and 12,729.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,801.10 : 31,465.54 = 12,729.53 : x
2. Step 2: Convert to fraction form
   22,801.10/31,465.54 = 12,729.53/x
3. Step 3: Cross multiply
   22,801.10x = 31,465.54 × 12,729.53
4. Step 4: Simplify right side
   22,801.10x = 400,541,505.67
5. Step 5: Solve for x
   x = 400,541,505.67/22,801.10
6. Step 6: Final answer
   x = 17,566.77