Finding the Fourth Proportional to 2,662.56, 3,992.04 and 2,007.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.56 : 3,992.04 = 2,007.72 : x
2. Step 2: Convert to fraction form
   2,662.56/3,992.04 = 2,007.72/x
3. Step 3: Cross multiply
   2,662.56x = 3,992.04 × 2,007.72
4. Step 4: Simplify right side
   2,662.56x = 8,014,898.55
5. Step 5: Solve for x
   x = 8,014,898.55/2,662.56
6. Step 6: Final answer
   x = 3,010.22