Finding the Fourth Proportional to 22,687.89, 31,304.70 and 13,254.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,687.89 : 31,304.70 = 13,254.63 : x
2. Step 2: Convert to fraction form
   22,687.89/31,304.70 = 13,254.63/x
3. Step 3: Cross multiply
   22,687.89x = 31,304.70 × 13,254.63
4. Step 4: Simplify right side
   22,687.89x = 414,932,215.76
5. Step 5: Solve for x
   x = 414,932,215.76/22,687.89
6. Step 6: Final answer
   x = 18,288.71