Finding the Fourth Proportional to 9,789.68, 13,509.12 and 5,597.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,789.68 : 13,509.12 = 5,597.92 : x
2. Step 2: Convert to fraction form
   9,789.68/13,509.12 = 5,597.92/x
3. Step 3: Cross multiply
   9,789.68x = 13,509.12 × 5,597.92
4. Step 4: Simplify right side
   9,789.68x = 75,622,973.03
5. Step 5: Solve for x
   x = 75,622,973.03/9,789.68
6. Step 6: Final answer
   x = 7,724.76