Finding the Fourth Proportional to 9,643.59, 13,304.79 and 5,865.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,643.59 : 13,304.79 = 5,865.57 : x
2. Step 2: Convert to fraction form
   9,643.59/13,304.79 = 5,865.57/x
3. Step 3: Cross multiply
   9,643.59x = 13,304.79 × 5,865.57
4. Step 4: Simplify right side
   9,643.59x = 78,040,177.08
5. Step 5: Solve for x
   x = 78,040,177.08/9,643.59
6. Step 6: Final answer
   x = 8,092.44