Finding the Fourth Proportional to 8,581.25, 12,814.76 and 8,488.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,581.25 : 12,814.76 = 8,488.47 : x
2. Step 2: Convert to fraction form
   8,581.25/12,814.76 = 8,488.47/x
3. Step 3: Cross multiply
   8,581.25x = 12,814.76 × 8,488.47
4. Step 4: Simplify right side
   8,581.25x = 108,777,663.37
5. Step 5: Solve for x
   x = 108,777,663.37/8,581.25
6. Step 6: Final answer
   x = 12,676.21