Finding the Fourth Proportional to 22,617.04, 31,215.25 and 12,548.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,617.04 : 31,215.25 = 12,548.72 : x
2. Step 2: Convert to fraction form
   22,617.04/31,215.25 = 12,548.72/x
3. Step 3: Cross multiply
   22,617.04x = 31,215.25 × 12,548.72
4. Step 4: Simplify right side
   22,617.04x = 391,711,431.98
5. Step 5: Solve for x
   x = 391,711,431.98/22,617.04
6. Step 6: Final answer
   x = 17,319.31