Finding the Fourth Proportional to 9,935.78, 13,711.73 and 5,459.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,935.78 : 13,711.73 = 5,459.69 : x
2. Step 2: Convert to fraction form
   9,935.78/13,711.73 = 5,459.69/x
3. Step 3: Cross multiply
   9,935.78x = 13,711.73 × 5,459.69
4. Step 4: Simplify right side
   9,935.78x = 74,861,726.61
5. Step 5: Solve for x
   x = 74,861,726.61/9,935.78
6. Step 6: Final answer
   x = 7,534.56