Finding the Fourth Proportional to 12,733.50, 17,572.77 and 7,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,733.50 : 17,572.77 = 7,144.50 : x
2. Step 2: Convert to fraction form
   12,733.50/17,572.77 = 7,144.50/x
3. Step 3: Cross multiply
   12,733.50x = 17,572.77 × 7,144.50
4. Step 4: Simplify right side
   12,733.50x = 125,548,655.27
5. Step 5: Solve for x
   x = 125,548,655.27/12,733.50
6. Step 6: Final answer
   x = 9,859.71