Finding the Fourth Proportional to 22,635.79, 31,235.94 and 12,564.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,635.79 : 31,235.94 = 12,564.25 : x
2. Step 2: Convert to fraction form
   22,635.79/31,235.94 = 12,564.25/x
3. Step 3: Cross multiply
   22,635.79x = 31,235.94 × 12,564.25
4. Step 4: Simplify right side
   22,635.79x = 392,456,159.15
5. Step 5: Solve for x
   x = 392,456,159.15/22,635.79
6. Step 6: Final answer
   x = 17,337.86