Finding the Fourth Proportional to 22,838.31, 31,517.61 and 12,629.49

Step by Step Solution

1. Step 1: Write the proportion equation
   22,838.31 : 31,517.61 = 12,629.49 : x
2. Step 2: Convert to fraction form
   22,838.31/31,517.61 = 12,629.49/x
3. Step 3: Cross multiply
   22,838.31x = 31,517.61 × 12,629.49
4. Step 4: Simplify right side
   22,838.31x = 398,051,340.32
5. Step 5: Solve for x
   x = 398,051,340.32/22,838.31
6. Step 6: Final answer
   x = 17,429.11