Finding the Fourth Proportional to 12,168.78, 16,788.99 and 9,608.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,168.78 : 16,788.99 = 9,608.41 : x
2. Step 2: Convert to fraction form
   12,168.78/16,788.99 = 9,608.41/x
3. Step 3: Cross multiply
   12,168.78x = 16,788.99 × 9,608.41
4. Step 4: Simplify right side
   12,168.78x = 161,315,499.41
5. Step 5: Solve for x
   x = 161,315,499.41/12,168.78
6. Step 6: Final answer
   x = 13,256.51