Finding the Fourth Proportional to 3,993.72, 5,511.42 and 2,225.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.72 : 5,511.42 = 2,225.49 : x
2. Step 2: Convert to fraction form
   3,993.72/5,511.42 = 2,225.49/x
3. Step 3: Cross multiply
   3,993.72x = 5,511.42 × 2,225.49
4. Step 4: Simplify right side
   3,993.72x = 12,265,610.10
5. Step 5: Solve for x
   x = 12,265,610.10/3,993.72
6. Step 6: Final answer
   x = 3,071.22