Finding the Fourth Proportional to 55,168.16, 82,754.72 and 15,728

Step by Step Solution

1. Step 1: Write the proportion equation
   55,168.16 : 82,754.72 = 15,728 : x
2. Step 2: Convert to fraction form
   55,168.16/82,754.72 = 15,728/x
3. Step 3: Cross multiply
   55,168.16x = 82,754.72 × 15,728
4. Step 4: Simplify right side
   55,168.16x = 1,301,566,236.16
5. Step 5: Solve for x
   x = 1,301,566,236.16/55,168.16
6. Step 6: Final answer
   x = 23,592.71