Finding the Fourth Proportional to 33,667.50, 50,508.54 and 12,891

Step by Step Solution

1. Step 1: Write the proportion equation
   33,667.50 : 50,508.54 = 12,891 : x
2. Step 2: Convert to fraction form
   33,667.50/50,508.54 = 12,891/x
3. Step 3: Cross multiply
   33,667.50x = 50,508.54 × 12,891
4. Step 4: Simplify right side
   33,667.50x = 651,105,589.14
5. Step 5: Solve for x
   x = 651,105,589.14/33,667.50
6. Step 6: Final answer
   x = 19,339.29