Finding the Fourth Proportional to 9,935.06, 13,710.15 and 5,458.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,935.06 : 13,710.15 = 5,458.80 : x
2. Step 2: Convert to fraction form
   9,935.06/13,710.15 = 5,458.80/x
3. Step 3: Cross multiply
   9,935.06x = 13,710.15 × 5,458.80
4. Step 4: Simplify right side
   9,935.06x = 74,840,966.82
5. Step 5: Solve for x
   x = 74,840,966.82/9,935.06
6. Step 6: Final answer
   x = 7,533.02