Finding the Fourth Proportional to 6,384.72, 8,808.49 and 3,960.96

Step by Step Solution

1. Step 1: Write the proportion equation
   6,384.72 : 8,808.49 = 3,960.96 : x
2. Step 2: Convert to fraction form
   6,384.72/8,808.49 = 3,960.96/x
3. Step 3: Cross multiply
   6,384.72x = 8,808.49 × 3,960.96
4. Step 4: Simplify right side
   6,384.72x = 34,890,076.55
5. Step 5: Solve for x
   x = 34,890,076.55/6,384.72
6. Step 6: Final answer
   x = 5,464.62