Finding the Fourth Proportional to 33,992.39, 50,945.31 and 19,209.57

Step by Step Solution

1. Step 1: Write the proportion equation
   33,992.39 : 50,945.31 = 19,209.57 : x
2. Step 2: Convert to fraction form
   33,992.39/50,945.31 = 19,209.57/x
3. Step 3: Cross multiply
   33,992.39x = 50,945.31 × 19,209.57
4. Step 4: Simplify right side
   33,992.39x = 978,637,498.62
5. Step 5: Solve for x
   x = 978,637,498.62/33,992.39
6. Step 6: Final answer
   x = 28,789.90