Finding the Fourth Proportional to 6,443.52, 8,895.36 and 3,960.96

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.52 : 8,895.36 = 3,960.96 : x
2. Step 2: Convert to fraction form
   6,443.52/8,895.36 = 3,960.96/x
3. Step 3: Cross multiply
   6,443.52x = 8,895.36 × 3,960.96
4. Step 4: Simplify right side
   6,443.52x = 35,234,165.15
5. Step 5: Solve for x
   x = 35,234,165.15/6,443.52
6. Step 6: Final answer
   x = 5,468.15