Finding the Fourth Proportional to 6,513.31, 8,989.50 and 3,861.64

Step by Step Solution

1. Step 1: Write the proportion equation
   6,513.31 : 8,989.50 = 3,861.64 : x
2. Step 2: Convert to fraction form
   6,513.31/8,989.50 = 3,861.64/x
3. Step 3: Cross multiply
   6,513.31x = 8,989.50 × 3,861.64
4. Step 4: Simplify right side
   6,513.31x = 34,714,212.78
5. Step 5: Solve for x
   x = 34,714,212.78/6,513.31
6. Step 6: Final answer
   x = 5,329.73