Finding the Fourth Proportional to 12,076.32, 18,114.16 and 3,311.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,076.32 : 18,114.16 = 3,311.20 : x
2. Step 2: Convert to fraction form
   12,076.32/18,114.16 = 3,311.20/x
3. Step 3: Cross multiply
   12,076.32x = 18,114.16 × 3,311.20
4. Step 4: Simplify right side
   12,076.32x = 59,979,606.59
5. Step 5: Solve for x
   x = 59,979,606.59/12,076.32
6. Step 6: Final answer
   x = 4,966.71