Finding the Fourth Proportional to 6,314.76, 8,716.41 and 4,080.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,314.76 : 8,716.41 = 4,080.78 : x
2. Step 2: Convert to fraction form
   6,314.76/8,716.41 = 4,080.78/x
3. Step 3: Cross multiply
   6,314.76x = 8,716.41 × 4,080.78
4. Step 4: Simplify right side
   6,314.76x = 35,569,751.60
5. Step 5: Solve for x
   x = 35,569,751.60/6,314.76
6. Step 6: Final answer
   x = 5,632.80