Finding the Fourth Proportional to 12,727.50, 17,563.98 and 7,759.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,727.50 : 17,563.98 = 7,759.50 : x
2. Step 2: Convert to fraction form
   12,727.50/17,563.98 = 7,759.50/x
3. Step 3: Cross multiply
   12,727.50x = 17,563.98 × 7,759.50
4. Step 4: Simplify right side
   12,727.50x = 136,287,702.81
5. Step 5: Solve for x
   x = 136,287,702.81/12,727.50
6. Step 6: Final answer
   x = 10,708.13