Finding the Fourth Proportional to 11,965.50, 17,951.13 and 3,757.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,965.50 : 17,951.13 = 3,757.50 : x
2. Step 2: Convert to fraction form
   11,965.50/17,951.13 = 3,757.50/x
3. Step 3: Cross multiply
   11,965.50x = 17,951.13 × 3,757.50
4. Step 4: Simplify right side
   11,965.50x = 67,451,370.98
5. Step 5: Solve for x
   x = 67,451,370.98/11,965.50
6. Step 6: Final answer
   x = 5,637.15