Finding the Fourth Proportional to 3,931.92, 5,867.21 and 3,582.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.92 : 5,867.21 = 3,582.60 : x
2. Step 2: Convert to fraction form
   3,931.92/5,867.21 = 3,582.60/x
3. Step 3: Cross multiply
   3,931.92x = 5,867.21 × 3,582.60
4. Step 4: Simplify right side
   3,931.92x = 21,019,866.55
5. Step 5: Solve for x
   x = 21,019,866.55/3,931.92
6. Step 6: Final answer
   x = 5,345.95