Finding the Fourth Proportional to 9,766.21, 14,669.15 and 8,622.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,766.21 : 14,669.15 = 8,622.15 : x
2. Step 2: Convert to fraction form
   9,766.21/14,669.15 = 8,622.15/x
3. Step 3: Cross multiply
   9,766.21x = 14,669.15 × 8,622.15
4. Step 4: Simplify right side
   9,766.21x = 126,479,568.56
5. Step 5: Solve for x
   x = 126,479,568.56/9,766.21
6. Step 6: Final answer
   x = 12,950.74