Finding the Fourth Proportional to 33,764.72, 50,647.12 and 9,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,764.72 : 50,647.12 = 9,140.72 : x
2. Step 2: Convert to fraction form
   33,764.72/50,647.12 = 9,140.72/x
3. Step 3: Cross multiply
   33,764.72x = 50,647.12 × 9,140.72
4. Step 4: Simplify right side
   33,764.72x = 462,951,142.73
5. Step 5: Solve for x
   x = 462,951,142.73/33,764.72
6. Step 6: Final answer
   x = 13,711.09