Finding the Fourth Proportional to 4,007.12, 5,530.04 and 2,238.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,007.12 : 5,530.04 = 2,238.72 : x
2. Step 2: Convert to fraction form
   4,007.12/5,530.04 = 2,238.72/x
3. Step 3: Cross multiply
   4,007.12x = 5,530.04 × 2,238.72
4. Step 4: Simplify right side
   4,007.12x = 12,380,211.15
5. Step 5: Solve for x
   x = 12,380,211.15/4,007.12
6. Step 6: Final answer
   x = 3,089.55