Finding the Fourth Proportional to 3,861.18, 5,316.18 and 3,020.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861.18 : 5,316.18 = 3,020.82 : x
2. Step 2: Convert to fraction form
   3,861.18/5,316.18 = 3,020.82/x
3. Step 3: Cross multiply
   3,861.18x = 5,316.18 × 3,020.82
4. Step 4: Simplify right side
   3,861.18x = 16,059,222.87
5. Step 5: Solve for x
   x = 16,059,222.87/3,861.18
6. Step 6: Final answer
   x = 4,159.15