Finding the Fourth Proportional to 9,732.24, 13,428.72 and 5,539.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,732.24 : 13,428.72 = 5,539.68 : x
2. Step 2: Convert to fraction form
   9,732.24/13,428.72 = 5,539.68/x
3. Step 3: Cross multiply
   9,732.24x = 13,428.72 × 5,539.68
4. Step 4: Simplify right side
   9,732.24x = 74,390,811.61
5. Step 5: Solve for x
   x = 74,390,811.61/9,732.24
6. Step 6: Final answer
   x = 7,643.75