Finding the Fourth Proportional to 5,165.73, 7,128.56 and 2,927.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,165.73 : 7,128.56 = 2,927.81 : x
2. Step 2: Convert to fraction form
   5,165.73/7,128.56 = 2,927.81/x
3. Step 3: Cross multiply
   5,165.73x = 7,128.56 × 2,927.81
4. Step 4: Simplify right side
   5,165.73x = 20,871,054.61
5. Step 5: Solve for x
   x = 20,871,054.61/5,165.73
6. Step 6: Final answer
   x = 4,040.29