Finding the Fourth Proportional to 41,764.72, 62,640.71 and 13,687.69

Step by Step Solution

1. Step 1: Write the proportion equation
   41,764.72 : 62,640.71 = 13,687.69 : x
2. Step 2: Convert to fraction form
   41,764.72/62,640.71 = 13,687.69/x
3. Step 3: Cross multiply
   41,764.72x = 62,640.71 × 13,687.69
4. Step 4: Simplify right side
   41,764.72x = 857,406,446.15
5. Step 5: Solve for x
   x = 857,406,446.15/41,764.72
6. Step 6: Final answer
   x = 20,529.44