Finding the Fourth Proportional to 8,608.01, 12,913.85 and 2,768.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,608.01 : 12,913.85 = 2,768.72 : x
2. Step 2: Convert to fraction form
   8,608.01/12,913.85 = 2,768.72/x
3. Step 3: Cross multiply
   8,608.01x = 12,913.85 × 2,768.72
4. Step 4: Simplify right side
   8,608.01x = 35,754,834.77
5. Step 5: Solve for x
   x = 35,754,834.77/8,608.01
6. Step 6: Final answer
   x = 4,153.67