Finding the Fourth Proportional to 20,944.49, 28,908.83 and 13,868.33

Step by Step Solution

1. Step 1: Write the proportion equation
   20,944.49 : 28,908.83 = 13,868.33 : x
2. Step 2: Convert to fraction form
   20,944.49/28,908.83 = 13,868.33/x
3. Step 3: Cross multiply
   20,944.49x = 28,908.83 × 13,868.33
4. Step 4: Simplify right side
   20,944.49x = 400,917,084.48
5. Step 5: Solve for x
   x = 400,917,084.48/20,944.49
6. Step 6: Final answer
   x = 19,141.89