Finding the Fourth Proportional to 3,996.50, 5,515.16 and 2,228.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,996.50 : 5,515.16 = 2,228.00 : x
2. Step 2: Convert to fraction form
   3,996.50/5,515.16 = 2,228.00/x
3. Step 3: Cross multiply
   3,996.50x = 5,515.16 × 2,228.00
4. Step 4: Simplify right side
   3,996.50x = 12,287,737.76
5. Step 5: Solve for x
   x = 12,287,737.76/3,996.50
6. Step 6: Final answer
   x = 3,074.63