Finding the Fourth Proportional to 5,870.32, 8,100.99 and 3,217.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,870.32 : 8,100.99 = 3,217.72 : x
2. Step 2: Convert to fraction form
   5,870.32/8,100.99 = 3,217.72/x
3. Step 3: Cross multiply
   5,870.32x = 8,100.99 × 3,217.72
4. Step 4: Simplify right side
   5,870.32x = 26,066,717.54
5. Step 5: Solve for x
   x = 26,066,717.54/5,870.32
6. Step 6: Final answer
   x = 4,440.43