Finding the Fourth Proportional to 22,629.76, 31,231.37 and 12,558.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,629.76 : 31,231.37 = 12,558.27 : x
2. Step 2: Convert to fraction form
   22,629.76/31,231.37 = 12,558.27/x
3. Step 3: Cross multiply
   22,629.76x = 31,231.37 × 12,558.27
4. Step 4: Simplify right side
   22,629.76x = 392,211,976.93
5. Step 5: Solve for x
   x = 392,211,976.93/22,629.76
6. Step 6: Final answer
   x = 17,331.69