Finding the Fourth Proportional to 9,168.96, 12,641.76 and 8,676.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,168.96 : 12,641.76 = 8,676.48 : x
2. Step 2: Convert to fraction form
   9,168.96/12,641.76 = 8,676.48/x
3. Step 3: Cross multiply
   9,168.96x = 12,641.76 × 8,676.48
4. Step 4: Simplify right side
   9,168.96x = 109,685,977.80
5. Step 5: Solve for x
   x = 109,685,977.80/9,168.96
6. Step 6: Final answer
   x = 11,962.75