Finding the Fourth Proportional to 8,608.50, 12,910.89 and 2,765.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,608.50 : 12,910.89 = 2,765.58 : x
2. Step 2: Convert to fraction form
   8,608.50/12,910.89 = 2,765.58/x
3. Step 3: Cross multiply
   8,608.50x = 12,910.89 × 2,765.58
4. Step 4: Simplify right side
   8,608.50x = 35,706,099.17
5. Step 5: Solve for x
   x = 35,706,099.17/8,608.50
6. Step 6: Final answer
   x = 4,147.77