Finding the Fourth Proportional to 12,076.80, 16,620.24 and 10,959.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,076.80 : 16,620.24 = 10,959.12 : x
2. Step 2: Convert to fraction form
   12,076.80/16,620.24 = 10,959.12/x
3. Step 3: Cross multiply
   12,076.80x = 16,620.24 × 10,959.12
4. Step 4: Simplify right side
   12,076.80x = 182,143,204.59
5. Step 5: Solve for x
   x = 182,143,204.59/12,076.80
6. Step 6: Final answer
   x = 15,082.08