Finding the Fourth Proportional to 33,789.34, 50,692.83 and 12,729.61

Step by Step Solution

1. Step 1: Write the proportion equation
   33,789.34 : 50,692.83 = 12,729.61 : x
2. Step 2: Convert to fraction form
   33,789.34/50,692.83 = 12,729.61/x
3. Step 3: Cross multiply
   33,789.34x = 50,692.83 × 12,729.61
4. Step 4: Simplify right side
   33,789.34x = 645,299,955.70
5. Step 5: Solve for x
   x = 645,299,955.70/33,789.34
6. Step 6: Final answer
   x = 19,097.74