Finding the Fourth Proportional to 9,608.36, 13,259.61 and 5,359.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,608.36 : 13,259.61 = 5,359.70 : x
2. Step 2: Convert to fraction form
   9,608.36/13,259.61 = 5,359.70/x
3. Step 3: Cross multiply
   9,608.36x = 13,259.61 × 5,359.70
4. Step 4: Simplify right side
   9,608.36x = 71,067,564.87
5. Step 5: Solve for x
   x = 71,067,564.87/9,608.36
6. Step 6: Final answer
   x = 7,396.43