Finding the Fourth Proportional to 6,275.20, 8,660.10 and 3,480.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,275.20 : 8,660.10 = 3,480.88 : x
2. Step 2: Convert to fraction form
   6,275.20/8,660.10 = 3,480.88/x
3. Step 3: Cross multiply
   6,275.20x = 8,660.10 × 3,480.88
4. Step 4: Simplify right side
   6,275.20x = 30,144,768.89
5. Step 5: Solve for x
   x = 30,144,768.89/6,275.20
6. Step 6: Final answer
   x = 4,803.79