Finding the Fourth Proportional to 12,585.73, 17,367.87 and 8,109.67

Step by Step Solution

1. Step 1: Write the proportion equation
   12,585.73 : 17,367.87 = 8,109.67 : x
2. Step 2: Convert to fraction form
   12,585.73/17,367.87 = 8,109.67/x
3. Step 3: Cross multiply
   12,585.73x = 17,367.87 × 8,109.67
4. Step 4: Simplify right side
   12,585.73x = 140,847,694.30
5. Step 5: Solve for x
   x = 140,847,694.30/12,585.73
6. Step 6: Final answer
   x = 11,191.06