Finding the Fourth Proportional to 8,076.72, 12,121.56 and 4,182.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,076.72 : 12,121.56 = 4,182.24 : x
2. Step 2: Convert to fraction form
   8,076.72/12,121.56 = 4,182.24/x
3. Step 3: Cross multiply
   8,076.72x = 12,121.56 × 4,182.24
4. Step 4: Simplify right side
   8,076.72x = 50,695,273.09
5. Step 5: Solve for x
   x = 50,695,273.09/8,076.72
6. Step 6: Final answer
   x = 6,276.72