Finding the Fourth Proportional to 8,146.72, 12,221.31 and 2,951.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,146.72 : 12,221.31 = 2,951.38 : x
2. Step 2: Convert to fraction form
   8,146.72/12,221.31 = 2,951.38/x
3. Step 3: Cross multiply
   8,146.72x = 12,221.31 × 2,951.38
4. Step 4: Simplify right side
   8,146.72x = 36,069,668.80
5. Step 5: Solve for x
   x = 36,069,668.80/8,146.72
6. Step 6: Final answer
   x = 4,427.51