Finding the Fourth Proportional to 9,640.33, 14,443.99 and 5,260.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,640.33 : 14,443.99 = 5,260.86 : x
2. Step 2: Convert to fraction form
   9,640.33/14,443.99 = 5,260.86/x
3. Step 3: Cross multiply
   9,640.33x = 14,443.99 × 5,260.86
4. Step 4: Simplify right side
   9,640.33x = 75,987,796.08
5. Step 5: Solve for x
   x = 75,987,796.08/9,640.33
6. Step 6: Final answer
   x = 7,882.28