Finding the Fourth Proportional to 33,238.65, 49,843.38 and 12,447.57

Step by Step Solution

1. Step 1: Write the proportion equation
   33,238.65 : 49,843.38 = 12,447.57 : x
2. Step 2: Convert to fraction form
   33,238.65/49,843.38 = 12,447.57/x
3. Step 3: Cross multiply
   33,238.65x = 49,843.38 × 12,447.57
4. Step 4: Simplify right side
   33,238.65x = 620,428,961.59
5. Step 5: Solve for x
   x = 620,428,961.59/33,238.65
6. Step 6: Final answer
   x = 18,665.89