Finding the Fourth Proportional to 3,996.74, 5,514.78 and 2,228.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,996.74 : 5,514.78 = 2,228.30 : x
2. Step 2: Convert to fraction form
   3,996.74/5,514.78 = 2,228.30/x
3. Step 3: Cross multiply
   3,996.74x = 5,514.78 × 2,228.30
4. Step 4: Simplify right side
   3,996.74x = 12,288,584.27
5. Step 5: Solve for x
   x = 12,288,584.27/3,996.74
6. Step 6: Final answer
   x = 3,074.65