Finding the Fourth Proportional to 5,857.45, 8,085.69 and 3,971.62

Step by Step Solution

1. Step 1: Write the proportion equation
   5,857.45 : 8,085.69 = 3,971.62 : x
2. Step 2: Convert to fraction form
   5,857.45/8,085.69 = 3,971.62/x
3. Step 3: Cross multiply
   5,857.45x = 8,085.69 × 3,971.62
4. Step 4: Simplify right side
   5,857.45x = 32,113,288.12
5. Step 5: Solve for x
   x = 32,113,288.12/5,857.45
6. Step 6: Final answer
   x = 5,482.47