Finding the Fourth Proportional to 10,868.72, 16,304.49 and 3,077.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,868.72 : 16,304.49 = 3,077.60 : x
2. Step 2: Convert to fraction form
   10,868.72/16,304.49 = 3,077.60/x
3. Step 3: Cross multiply
   10,868.72x = 16,304.49 × 3,077.60
4. Step 4: Simplify right side
   10,868.72x = 50,178,616.90
5. Step 5: Solve for x
   x = 50,178,616.90/10,868.72
6. Step 6: Final answer
   x = 4,616.79