Finding the Fourth Proportional to 3,915.52, 5,868.06 and 2,066.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915.52 : 5,868.06 = 2,066.20 : x
2. Step 2: Convert to fraction form
   3,915.52/5,868.06 = 2,066.20/x
3. Step 3: Cross multiply
   3,915.52x = 5,868.06 × 2,066.20
4. Step 4: Simplify right side
   3,915.52x = 12,124,585.57
5. Step 5: Solve for x
   x = 12,124,585.57/3,915.52
6. Step 6: Final answer
   x = 3,096.55