Finding the Fourth Proportional to 6,245.92, 8,619.72 and 3,520.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,245.92 : 8,619.72 = 3,520.72 : x
2. Step 2: Convert to fraction form
   6,245.92/8,619.72 = 3,520.72/x
3. Step 3: Cross multiply
   6,245.92x = 8,619.72 × 3,520.72
4. Step 4: Simplify right side
   6,245.92x = 30,347,620.60
5. Step 5: Solve for x
   x = 30,347,620.60/6,245.92
6. Step 6: Final answer
   x = 4,858.79