Finding the Fourth Proportional to 4,007.54, 5,530.72 and 2,215.16

Step by Step Solution

1. Step 1: Write the proportion equation
   4,007.54 : 5,530.72 = 2,215.16 : x
2. Step 2: Convert to fraction form
   4,007.54/5,530.72 = 2,215.16/x
3. Step 3: Cross multiply
   4,007.54x = 5,530.72 × 2,215.16
4. Step 4: Simplify right side
   4,007.54x = 12,251,429.72
5. Step 5: Solve for x
   x = 12,251,429.72/4,007.54
6. Step 6: Final answer
   x = 3,057.09