Finding the Fourth Proportional to 33,390.69, 50,104.50 and 13,683.09

Step by Step Solution

1. Step 1: Write the proportion equation
   33,390.69 : 50,104.50 = 13,683.09 : x
2. Step 2: Convert to fraction form
   33,390.69/50,104.50 = 13,683.09/x
3. Step 3: Cross multiply
   33,390.69x = 50,104.50 × 13,683.09
4. Step 4: Simplify right side
   33,390.69x = 685,584,382.91
5. Step 5: Solve for x
   x = 685,584,382.91/33,390.69
6. Step 6: Final answer
   x = 20,532.20