Finding the Fourth Proportional to 36,965.72, 55,470.54 and 13,608.56

Step by Step Solution

1. Step 1: Write the proportion equation
   36,965.72 : 55,470.54 = 13,608.56 : x
2. Step 2: Convert to fraction form
   36,965.72/55,470.54 = 13,608.56/x
3. Step 3: Cross multiply
   36,965.72x = 55,470.54 × 13,608.56
4. Step 4: Simplify right side
   36,965.72x = 754,874,171.82
5. Step 5: Solve for x
   x = 754,874,171.82/36,965.72
6. Step 6: Final answer
   x = 20,420.92