Finding the Fourth Proportional to 39,728.72, 59,601.72 and 12,026

Step by Step Solution

1. Step 1: Write the proportion equation
   39,728.72 : 59,601.72 = 12,026 : x
2. Step 2: Convert to fraction form
   39,728.72/59,601.72 = 12,026/x
3. Step 3: Cross multiply
   39,728.72x = 59,601.72 × 12,026
4. Step 4: Simplify right side
   39,728.72x = 716,770,284.72
5. Step 5: Solve for x
   x = 716,770,284.72/39,728.72
6. Step 6: Final answer
   x = 18,041.62