Finding the Fourth Proportional to 3,915.92, 5,404.91 and 2,659.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915.92 : 5,404.91 = 2,659.07 : x
2. Step 2: Convert to fraction form
   3,915.92/5,404.91 = 2,659.07/x
3. Step 3: Cross multiply
   3,915.92x = 5,404.91 × 2,659.07
4. Step 4: Simplify right side
   3,915.92x = 14,371,993.71
5. Step 5: Solve for x
   x = 14,371,993.71/3,915.92
6. Step 6: Final answer
   x = 3,670.15