Finding the Fourth Proportional to 6,290.64, 8,680.72 and 3,496.32

Step by Step Solution

1. Step 1: Write the proportion equation
   6,290.64 : 8,680.72 = 3,496.32 : x
2. Step 2: Convert to fraction form
   6,290.64/8,680.72 = 3,496.32/x
3. Step 3: Cross multiply
   6,290.64x = 8,680.72 × 3,496.32
4. Step 4: Simplify right side
   6,290.64x = 30,350,574.95
5. Step 5: Solve for x
   x = 30,350,574.95/6,290.64
6. Step 6: Final answer
   x = 4,824.72