Finding the Fourth Proportional to 3,997.72, 5,515.56 and 2,228.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.72 : 5,515.56 = 2,228.98 : x
2. Step 2: Convert to fraction form
   3,997.72/5,515.56 = 2,228.98/x
3. Step 3: Cross multiply
   3,997.72x = 5,515.56 × 2,228.98
4. Step 4: Simplify right side
   3,997.72x = 12,294,072.93
5. Step 5: Solve for x
   x = 12,294,072.93/3,997.72
6. Step 6: Final answer
   x = 3,075.27