Finding the Fourth Proportional to 22,629.60, 31,227.25 and 12,558.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,629.60 : 31,227.25 = 12,558.47 : x
2. Step 2: Convert to fraction form
   22,629.60/31,227.25 = 12,558.47/x
3. Step 3: Cross multiply
   22,629.60x = 31,227.25 × 12,558.47
4. Step 4: Simplify right side
   22,629.60x = 392,166,370.83
5. Step 5: Solve for x
   x = 392,166,370.83/22,629.60
6. Step 6: Final answer
   x = 17,329.79