Finding the Fourth Proportional to 5,176.56, 7,143.68 and 2,818.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,176.56 : 7,143.68 = 2,818.72 : x
2. Step 2: Convert to fraction form
   5,176.56/7,143.68 = 2,818.72/x
3. Step 3: Cross multiply
   5,176.56x = 7,143.68 × 2,818.72
4. Step 4: Simplify right side
   5,176.56x = 20,136,033.69
5. Step 5: Solve for x
   x = 20,136,033.69/5,176.56
6. Step 6: Final answer
   x = 3,889.85