Finding the Fourth Proportional to 6,245.88, 8,616.72 and 4,007.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,245.88 : 8,616.72 = 4,007.28 : x
2. Step 2: Convert to fraction form
   6,245.88/8,616.72 = 4,007.28/x
3. Step 3: Cross multiply
   6,245.88x = 8,616.72 × 4,007.28
4. Step 4: Simplify right side
   6,245.88x = 34,529,609.72
5. Step 5: Solve for x
   x = 34,529,609.72/6,245.88
6. Step 6: Final answer
   x = 5,528.38