Finding the Fourth Proportional to 3,911.76, 5,397.72 and 2,339.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,911.76 : 5,397.72 = 2,339.52 : x
2. Step 2: Convert to fraction form
   3,911.76/5,397.72 = 2,339.52/x
3. Step 3: Cross multiply
   3,911.76x = 5,397.72 × 2,339.52
4. Step 4: Simplify right side
   3,911.76x = 12,628,073.89
5. Step 5: Solve for x
   x = 12,628,073.89/3,911.76
6. Step 6: Final answer
   x = 3,228.23