Finding the Fourth Proportional to 12,608.68, 18,915.90 and 3,843.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,608.68 : 18,915.90 = 3,843.76 : x
2. Step 2: Convert to fraction form
   12,608.68/18,915.90 = 3,843.76/x
3. Step 3: Cross multiply
   12,608.68x = 18,915.90 × 3,843.76
4. Step 4: Simplify right side
   12,608.68x = 72,708,179.78
5. Step 5: Solve for x
   x = 72,708,179.78/12,608.68
6. Step 6: Final answer
   x = 5,766.52