Finding the Fourth Proportional to 8,716.47, 12,031.82 and 5,179.67

Step by Step Solution

1. Step 1: Write the proportion equation
   8,716.47 : 12,031.82 = 5,179.67 : x
2. Step 2: Convert to fraction form
   8,716.47/12,031.82 = 5,179.67/x
3. Step 3: Cross multiply
   8,716.47x = 12,031.82 × 5,179.67
4. Step 4: Simplify right side
   8,716.47x = 62,320,857.10
5. Step 5: Solve for x
   x = 62,320,857.10/8,716.47
6. Step 6: Final answer
   x = 7,149.78