Finding the Fourth Proportional to 8,581.14, 12,814.61 and 8,488.37

Step by Step Solution

1. Step 1: Write the proportion equation
   8,581.14 : 12,814.61 = 8,488.37 : x
2. Step 2: Convert to fraction form
   8,581.14/12,814.61 = 8,488.37/x
3. Step 3: Cross multiply
   8,581.14x = 12,814.61 × 8,488.37
4. Step 4: Simplify right side
   8,581.14x = 108,775,044.57
5. Step 5: Solve for x
   x = 108,775,044.57/8,581.14
6. Step 6: Final answer
   x = 12,676.06