Finding the Fourth Proportional to 8,608.53, 12,913.38 and 2,764.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,608.53 : 12,913.38 = 2,764.79 : x
2. Step 2: Convert to fraction form
   8,608.53/12,913.38 = 2,764.79/x
3. Step 3: Cross multiply
   8,608.53x = 12,913.38 × 2,764.79
4. Step 4: Simplify right side
   8,608.53x = 35,702,783.89
5. Step 5: Solve for x
   x = 35,702,783.89/8,608.53
6. Step 6: Final answer
   x = 4,147.37