Finding the Fourth Proportional to 3,884.39, 5,360.18 and 2,391.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,884.39 : 5,360.18 = 2,391.76 : x
2. Step 2: Convert to fraction form
   3,884.39/5,360.18 = 2,391.76/x
3. Step 3: Cross multiply
   3,884.39x = 5,360.18 × 2,391.76
4. Step 4: Simplify right side
   3,884.39x = 12,820,258.86
5. Step 5: Solve for x
   x = 12,820,258.86/3,884.39
6. Step 6: Final answer
   x = 3,300.46