Finding the Fourth Proportional to 6,380.38, 8,802.59 and 3,861.57

Step by Step Solution

1. Step 1: Write the proportion equation
   6,380.38 : 8,802.59 = 3,861.57 : x
2. Step 2: Convert to fraction form
   6,380.38/8,802.59 = 3,861.57/x
3. Step 3: Cross multiply
   6,380.38x = 8,802.59 × 3,861.57
4. Step 4: Simplify right side
   6,380.38x = 33,991,798.16
5. Step 5: Solve for x
   x = 33,991,798.16/6,380.38
6. Step 6: Final answer
   x = 5,327.55