Finding the Fourth Proportional to 33,564.16, 50,357.76 and 12,790.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,564.16 : 50,357.76 = 12,790.72 : x
2. Step 2: Convert to fraction form
   33,564.16/50,357.76 = 12,790.72/x
3. Step 3: Cross multiply
   33,564.16x = 50,357.76 × 12,790.72
4. Step 4: Simplify right side
   33,564.16x = 644,112,007.99
5. Step 5: Solve for x
   x = 644,112,007.99/33,564.16
6. Step 6: Final answer
   x = 19,190.47