Finding the Fourth Proportional to 5,870.36, 8,100.78 and 3,217.71

Step by Step Solution

1. Step 1: Write the proportion equation
   5,870.36 : 8,100.78 = 3,217.71 : x
2. Step 2: Convert to fraction form
   5,870.36/8,100.78 = 3,217.71/x
3. Step 3: Cross multiply
   5,870.36x = 8,100.78 × 3,217.71
4. Step 4: Simplify right side
   5,870.36x = 26,065,960.81
5. Step 5: Solve for x
   x = 26,065,960.81/5,870.36
6. Step 6: Final answer
   x = 4,440.27