Finding the Fourth Proportional to 5,921.92, 8,168.56 and 3,822.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,921.92 : 8,168.56 = 3,822.40 : x
2. Step 2: Convert to fraction form
   5,921.92/8,168.56 = 3,822.40/x
3. Step 3: Cross multiply
   5,921.92x = 8,168.56 × 3,822.40
4. Step 4: Simplify right side
   5,921.92x = 31,223,503.74
5. Step 5: Solve for x
   x = 31,223,503.74/5,921.92
6. Step 6: Final answer
   x = 5,272.53