Finding the Fourth Proportional to 5,120.56, 7,683.82 and 2,158.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,120.56 : 7,683.82 = 2,158.82 : x
2. Step 2: Convert to fraction form
   5,120.56/7,683.82 = 2,158.82/x
3. Step 3: Cross multiply
   5,120.56x = 7,683.82 × 2,158.82
4. Step 4: Simplify right side
   5,120.56x = 16,587,996.12
5. Step 5: Solve for x
   x = 16,587,996.12/5,120.56
6. Step 6: Final answer
   x = 3,239.49