Finding the Fourth Proportional to 3,997.64, 5,516.76 and 2,229.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.64 : 5,516.76 = 2,229.62 : x
2. Step 2: Convert to fraction form
   3,997.64/5,516.76 = 2,229.62/x
3. Step 3: Cross multiply
   3,997.64x = 5,516.76 × 2,229.62
4. Step 4: Simplify right side
   3,997.64x = 12,300,250.85
5. Step 5: Solve for x
   x = 12,300,250.85/3,997.64
6. Step 6: Final answer
   x = 3,076.88