Finding the Fourth Proportional to 22,686.89, 31,280.78 and 14,726.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,686.89 : 31,280.78 = 14,726.21 : x
2. Step 2: Convert to fraction form
   22,686.89/31,280.78 = 14,726.21/x
3. Step 3: Cross multiply
   22,686.89x = 31,280.78 × 14,726.21
4. Step 4: Simplify right side
   22,686.89x = 460,647,215.66
5. Step 5: Solve for x
   x = 460,647,215.66/22,686.89
6. Step 6: Final answer
   x = 20,304.56