Finding the Fourth Proportional to 3,908.27, 5,866.54 and 3,820.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,908.27 : 5,866.54 = 3,820.12 : x
2. Step 2: Convert to fraction form
   3,908.27/5,866.54 = 3,820.12/x
3. Step 3: Cross multiply
   3,908.27x = 5,866.54 × 3,820.12
4. Step 4: Simplify right side
   3,908.27x = 22,410,862.57
5. Step 5: Solve for x
   x = 22,410,862.57/3,908.27
6. Step 6: Final answer
   x = 5,734.21