Finding the Fourth Proportional to 43,790.72, 65,687.52 and 12,626.24

Step by Step Solution

1. Step 1: Write the proportion equation
   43,790.72 : 65,687.52 = 12,626.24 : x
2. Step 2: Convert to fraction form
   43,790.72/65,687.52 = 12,626.24/x
3. Step 3: Cross multiply
   43,790.72x = 65,687.52 × 12,626.24
4. Step 4: Simplify right side
   43,790.72x = 829,386,392.52
5. Step 5: Solve for x
   x = 829,386,392.52/43,790.72
6. Step 6: Final answer
   x = 18,939.78