Finding the Fourth Proportional to 6,475.28, 8,935.89 and 3,680.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,475.28 : 8,935.89 = 3,680.78 : x
2. Step 2: Convert to fraction form
   6,475.28/8,935.89 = 3,680.78/x
3. Step 3: Cross multiply
   6,475.28x = 8,935.89 × 3,680.78
4. Step 4: Simplify right side
   6,475.28x = 32,891,053.73
5. Step 5: Solve for x
   x = 32,891,053.73/6,475.28
6. Step 6: Final answer
   x = 5,079.48