Finding the Fourth Proportional to 8,514.72, 12,771.78 and 4,131

Step by Step Solution

1. Step 1: Write the proportion equation
   8,514.72 : 12,771.78 = 4,131 : x
2. Step 2: Convert to fraction form
   8,514.72/12,771.78 = 4,131/x
3. Step 3: Cross multiply
   8,514.72x = 12,771.78 × 4,131
4. Step 4: Simplify right side
   8,514.72x = 52,760,207.69
5. Step 5: Solve for x
   x = 52,760,207.69/8,514.72
6. Step 6: Final answer
   x = 6,196.35