Finding the Fourth Proportional to 4,081.20, 5,629.98 and 2,665.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,081.20 : 5,629.98 = 2,665.72 : x
2. Step 2: Convert to fraction form
   4,081.20/5,629.98 = 2,665.72/x
3. Step 3: Cross multiply
   4,081.20x = 5,629.98 × 2,665.72
4. Step 4: Simplify right side
   4,081.20x = 15,007,928.15
5. Step 5: Solve for x
   x = 15,007,928.15/4,081.20
6. Step 6: Final answer
   x = 3,677.33