Finding the Fourth Proportional to 4,042.56, 5,578.88 and 2,470.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,042.56 : 5,578.88 = 2,470.72 : x
2. Step 2: Convert to fraction form
   4,042.56/5,578.88 = 2,470.72/x
3. Step 3: Cross multiply
   4,042.56x = 5,578.88 × 2,470.72
4. Step 4: Simplify right side
   4,042.56x = 13,783,850.39
5. Step 5: Solve for x
   x = 13,783,850.39/4,042.56
6. Step 6: Final answer
   x = 3,409.68