Finding the Fourth Proportional to 6,057.30, 8,367.57 and 4,677.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,057.30 : 8,367.57 = 4,677.78 : x
2. Step 2: Convert to fraction form
   6,057.30/8,367.57 = 4,677.78/x
3. Step 3: Cross multiply
   6,057.30x = 8,367.57 × 4,677.78
4. Step 4: Simplify right side
   6,057.30x = 39,141,651.59
5. Step 5: Solve for x
   x = 39,141,651.59/6,057.30
6. Step 6: Final answer
   x = 6,461.90