Finding the Fourth Proportional to 14,359.98, 21,528.35 and 6,456.71

Step by Step Solution

1. Step 1: Write the proportion equation
   14,359.98 : 21,528.35 = 6,456.71 : x
2. Step 2: Convert to fraction form
   14,359.98/21,528.35 = 6,456.71/x
3. Step 3: Cross multiply
   14,359.98x = 21,528.35 × 6,456.71
4. Step 4: Simplify right side
   14,359.98x = 139,002,242.77
5. Step 5: Solve for x
   x = 139,002,242.77/14,359.98
6. Step 6: Final answer
   x = 9,679.84