Finding the Fourth Proportional to 10,776.17, 16,158.49 and 4,766.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,776.17 : 16,158.49 = 4,766.78 : x
2. Step 2: Convert to fraction form
   10,776.17/16,158.49 = 4,766.78/x
3. Step 3: Cross multiply
   10,776.17x = 16,158.49 × 4,766.78
4. Step 4: Simplify right side
   10,776.17x = 77,023,995.44
5. Step 5: Solve for x
   x = 77,023,995.44/10,776.17
6. Step 6: Final answer
   x = 7,147.62