Finding the Fourth Proportional to 22,629.31, 31,227.63 and 12,558.19

Step by Step Solution

1. Step 1: Write the proportion equation
   22,629.31 : 31,227.63 = 12,558.19 : x
2. Step 2: Convert to fraction form
   22,629.31/31,227.63 = 12,558.19/x
3. Step 3: Cross multiply
   22,629.31x = 31,227.63 × 12,558.19
4. Step 4: Simplify right side
   22,629.31x = 392,162,510.79
5. Step 5: Solve for x
   x = 392,162,510.79/22,629.31
6. Step 6: Final answer
   x = 17,329.85