Finding the Fourth Proportional to 33,938.33, 50,910.49 and 12,591.29

Step by Step Solution

1. Step 1: Write the proportion equation
   33,938.33 : 50,910.49 = 12,591.29 : x
2. Step 2: Convert to fraction form
   33,938.33/50,910.49 = 12,591.29/x
3. Step 3: Cross multiply
   33,938.33x = 50,910.49 × 12,591.29
4. Step 4: Simplify right side
   33,938.33x = 641,028,839.43
5. Step 5: Solve for x
   x = 641,028,839.43/33,938.33
6. Step 6: Final answer
   x = 18,888.05