Finding the Fourth Proportional to 33,436.72, 50,139.36 and 12,362.20

Step by Step Solution

1. Step 1: Write the proportion equation
   33,436.72 : 50,139.36 = 12,362.20 : x
2. Step 2: Convert to fraction form
   33,436.72/50,139.36 = 12,362.20/x
3. Step 3: Cross multiply
   33,436.72x = 50,139.36 × 12,362.20
4. Step 4: Simplify right side
   33,436.72x = 619,832,796.19
5. Step 5: Solve for x
   x = 619,832,796.19/33,436.72
6. Step 6: Final answer
   x = 18,537.49