Finding the Fourth Proportional to 3,906.32, 5,392.68 and 3,020.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.32 : 5,392.68 = 3,020.12 : x
2. Step 2: Convert to fraction form
   3,906.32/5,392.68 = 3,020.12/x
3. Step 3: Cross multiply
   3,906.32x = 5,392.68 × 3,020.12
4. Step 4: Simplify right side
   3,906.32x = 16,286,540.72
5. Step 5: Solve for x
   x = 16,286,540.72/3,906.32
6. Step 6: Final answer
   x = 4,169.28