Finding the Fourth Proportional to 9,935.76, 13,710.96 and 5,459.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,935.76 : 13,710.96 = 5,459.28 : x
2. Step 2: Convert to fraction form
   9,935.76/13,710.96 = 5,459.28/x
3. Step 3: Cross multiply
   9,935.76x = 13,710.96 × 5,459.28
4. Step 4: Simplify right side
   9,935.76x = 74,851,969.71
5. Step 5: Solve for x
   x = 74,851,969.71/9,935.76
6. Step 6: Final answer
   x = 7,533.59