Finding the Fourth Proportional to 8,851.05, 13,272.89 and 2,608.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,851.05 : 13,272.89 = 2,608.79 : x
2. Step 2: Convert to fraction form
   8,851.05/13,272.89 = 2,608.79/x
3. Step 3: Cross multiply
   8,851.05x = 13,272.89 × 2,608.79
4. Step 4: Simplify right side
   8,851.05x = 34,626,103.29
5. Step 5: Solve for x
   x = 34,626,103.29/8,851.05
6. Step 6: Final answer
   x = 3,912.09