Finding the Fourth Proportional to 8,665.97, 13,003.92 and 8,595.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.97 : 13,003.92 = 8,595.50 : x
2. Step 2: Convert to fraction form
   8,665.97/13,003.92 = 8,595.50/x
3. Step 3: Cross multiply
   8,665.97x = 13,003.92 × 8,595.50
4. Step 4: Simplify right side
   8,665.97x = 111,775,194.36
5. Step 5: Solve for x
   x = 111,775,194.36/8,665.97
6. Step 6: Final answer
   x = 12,898.17