Finding the Fourth Proportional to 9,591.06, 13,235.97 and 5,399.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,591.06 : 13,235.97 = 5,399.31 : x
2. Step 2: Convert to fraction form
   9,591.06/13,235.97 = 5,399.31/x
3. Step 3: Cross multiply
   9,591.06x = 13,235.97 × 5,399.31
4. Step 4: Simplify right side
   9,591.06x = 71,465,105.18
5. Step 5: Solve for x
   x = 71,465,105.18/9,591.06
6. Step 6: Final answer
   x = 7,451.22