Finding the Fourth Proportional to 3,906.26, 5,856.78 and 2,152.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.26 : 5,856.78 = 2,152.10 : x
2. Step 2: Convert to fraction form
   3,906.26/5,856.78 = 2,152.10/x
3. Step 3: Cross multiply
   3,906.26x = 5,856.78 × 2,152.10
4. Step 4: Simplify right side
   3,906.26x = 12,604,386.84
5. Step 5: Solve for x
   x = 12,604,386.84/3,906.26
6. Step 6: Final answer
   x = 3,226.72