Finding the Fourth Proportional to 14,500.71, 21,744.92 and 5,143.09

Step by Step Solution

1. Step 1: Write the proportion equation
   14,500.71 : 21,744.92 = 5,143.09 : x
2. Step 2: Convert to fraction form
   14,500.71/21,744.92 = 5,143.09/x
3. Step 3: Cross multiply
   14,500.71x = 21,744.92 × 5,143.09
4. Step 4: Simplify right side
   14,500.71x = 111,836,080.60
5. Step 5: Solve for x
   x = 111,836,080.60/14,500.71
6. Step 6: Final answer
   x = 7,712.46