Finding the Fourth Proportional to 33,321.31, 50,006.72 and 15,791.20

Step by Step Solution

1. Step 1: Write the proportion equation
   33,321.31 : 50,006.72 = 15,791.20 : x
2. Step 2: Convert to fraction form
   33,321.31/50,006.72 = 15,791.20/x
3. Step 3: Cross multiply
   33,321.31x = 50,006.72 × 15,791.20
4. Step 4: Simplify right side
   33,321.31x = 789,666,116.86
5. Step 5: Solve for x
   x = 789,666,116.86/33,321.31
6. Step 6: Final answer
   x = 23,698.53