Finding the Fourth Proportional to 3,906.32, 5,390.82 and 2,335.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.32 : 5,390.82 = 2,335.32 : x
2. Step 2: Convert to fraction form
   3,906.32/5,390.82 = 2,335.32/x
3. Step 3: Cross multiply
   3,906.32x = 5,390.82 × 2,335.32
4. Step 4: Simplify right side
   3,906.32x = 12,589,289.76
5. Step 5: Solve for x
   x = 12,589,289.76/3,906.32
6. Step 6: Final answer
   x = 3,222.80