Finding the Fourth Proportional to 9,935.92, 13,711.61 and 5,459.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,935.92 : 13,711.61 = 5,459.78 : x
2. Step 2: Convert to fraction form
   9,935.92/13,711.61 = 5,459.78/x
3. Step 3: Cross multiply
   9,935.92x = 13,711.61 × 5,459.78
4. Step 4: Simplify right side
   9,935.92x = 74,862,374.05
5. Step 5: Solve for x
   x = 74,862,374.05/9,935.92
6. Step 6: Final answer
   x = 7,534.52