Finding the Fourth Proportional to 23,928.03, 33,018.72 and 13,857.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,928.03 : 33,018.72 = 13,857.12 : x
2. Step 2: Convert to fraction form
   23,928.03/33,018.72 = 13,857.12/x
3. Step 3: Cross multiply
   23,928.03x = 33,018.72 × 13,857.12
4. Step 4: Simplify right side
   23,928.03x = 457,544,365.29
5. Step 5: Solve for x
   x = 457,544,365.29/23,928.03
6. Step 6: Final answer
   x = 19,121.69