Finding the Fourth Proportional to 5,165.48, 7,128.33 and 2,927.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,165.48 : 7,128.33 = 2,927.78 : x
2. Step 2: Convert to fraction form
   5,165.48/7,128.33 = 2,927.78/x
3. Step 3: Cross multiply
   5,165.48x = 7,128.33 × 2,927.78
4. Step 4: Simplify right side
   5,165.48x = 20,870,173.10
5. Step 5: Solve for x
   x = 20,870,173.10/5,165.48
6. Step 6: Final answer
   x = 4,040.32