Finding the Fourth Proportional to 9,591.88, 13,233.78 and 5,399.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,591.88 : 13,233.78 = 5,399.56 : x
2. Step 2: Convert to fraction form
   9,591.88/13,233.78 = 5,399.56/x
3. Step 3: Cross multiply
   9,591.88x = 13,233.78 × 5,399.56
4. Step 4: Simplify right side
   9,591.88x = 71,456,589.14
5. Step 5: Solve for x
   x = 71,456,589.14/9,591.88
6. Step 6: Final answer
   x = 7,449.70