Finding the Fourth Proportional to 9,731.68, 13,429.72 and 5,539.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,731.68 : 13,429.72 = 5,539.92 : x
2. Step 2: Convert to fraction form
   9,731.68/13,429.72 = 5,539.92/x
3. Step 3: Cross multiply
   9,731.68x = 13,429.72 × 5,539.92
4. Step 4: Simplify right side
   9,731.68x = 74,399,574.42
5. Step 5: Solve for x
   x = 74,399,574.42/9,731.68
6. Step 6: Final answer
   x = 7,645.09