Finding the Fourth Proportional to 10,976.20, 16,463.35 and 3,078.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,976.20 : 16,463.35 = 3,078.09 : x
2. Step 2: Convert to fraction form
   10,976.20/16,463.35 = 3,078.09/x
3. Step 3: Cross multiply
   10,976.20x = 16,463.35 × 3,078.09
4. Step 4: Simplify right side
   10,976.20x = 50,675,676.85
5. Step 5: Solve for x
   x = 50,675,676.85/10,976.20
6. Step 6: Final answer
   x = 4,616.87