Finding the Fourth Proportional to 5,870.72, 8,101.59 and 3,218.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,870.72 : 8,101.59 = 3,218.15 : x
2. Step 2: Convert to fraction form
   5,870.72/8,101.59 = 3,218.15/x
3. Step 3: Cross multiply
   5,870.72x = 8,101.59 × 3,218.15
4. Step 4: Simplify right side
   5,870.72x = 26,072,091.35
5. Step 5: Solve for x
   x = 26,072,091.35/5,870.72
6. Step 6: Final answer
   x = 4,441.04