Finding the Fourth Proportional to 12,146.16, 16,760.52 and 8,961.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.16 : 16,760.52 = 8,961.20 : x
2. Step 2: Convert to fraction form
   12,146.16/16,760.52 = 8,961.20/x
3. Step 3: Cross multiply
   12,146.16x = 16,760.52 × 8,961.20
4. Step 4: Simplify right side
   12,146.16x = 150,194,288.02
5. Step 5: Solve for x
   x = 150,194,288.02/12,146.16
6. Step 6: Final answer
   x = 12,365.58