Finding the Fourth Proportional to 31,728.96, 43,786.71 and 17,581.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,728.96 : 43,786.71 = 17,581.50 : x
2. Step 2: Convert to fraction form
   31,728.96/43,786.71 = 17,581.50/x
3. Step 3: Cross multiply
   31,728.96x = 43,786.71 × 17,581.50
4. Step 4: Simplify right side
   31,728.96x = 769,836,041.87
5. Step 5: Solve for x
   x = 769,836,041.87/31,728.96
6. Step 6: Final answer
   x = 24,262.88