Finding the Fourth Proportional to 4,007.10, 5,529.78 and 2,238.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,007.10 : 5,529.78 = 2,238.72 : x
2. Step 2: Convert to fraction form
   4,007.10/5,529.78 = 2,238.72/x
3. Step 3: Cross multiply
   4,007.10x = 5,529.78 × 2,238.72
4. Step 4: Simplify right side
   4,007.10x = 12,379,629.08
5. Step 5: Solve for x
   x = 12,379,629.08/4,007.10
6. Step 6: Final answer
   x = 3,089.42