Finding the Fourth Proportional to 3,997.98, 5,517.18 and 2,229.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.98 : 5,517.18 = 2,229.48 : x
2. Step 2: Convert to fraction form
   3,997.98/5,517.18 = 2,229.48/x
3. Step 3: Cross multiply
   3,997.98x = 5,517.18 × 2,229.48
4. Step 4: Simplify right side
   3,997.98x = 12,300,442.47
5. Step 5: Solve for x
   x = 12,300,442.47/3,997.98
6. Step 6: Final answer
   x = 3,076.66