Finding the Fourth Proportional to 8,616.27, 12,923.94 and 2,772.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,616.27 : 12,923.94 = 2,772.42 : x
2. Step 2: Convert to fraction form
   8,616.27/12,923.94 = 2,772.42/x
3. Step 3: Cross multiply
   8,616.27x = 12,923.94 × 2,772.42
4. Step 4: Simplify right side
   8,616.27x = 35,830,589.73
5. Step 5: Solve for x
   x = 35,830,589.73/8,616.27
6. Step 6: Final answer
   x = 4,158.48