Finding the Fourth Proportional to 9,287.67, 12,809.52 and 8,166.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,287.67 : 12,809.52 = 8,166.27 : x
2. Step 2: Convert to fraction form
   9,287.67/12,809.52 = 8,166.27/x
3. Step 3: Cross multiply
   9,287.67x = 12,809.52 × 8,166.27
4. Step 4: Simplify right side
   9,287.67x = 104,605,998.89
5. Step 5: Solve for x
   x = 104,605,998.89/9,287.67
6. Step 6: Final answer
   x = 11,262.89