Finding the Fourth Proportional to 10,141.75, 13,987.89 and 8,727.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,141.75 : 13,987.89 = 8,727.80 : x
2. Step 2: Convert to fraction form
   10,141.75/13,987.89 = 8,727.80/x
3. Step 3: Cross multiply
   10,141.75x = 13,987.89 × 8,727.80
4. Step 4: Simplify right side
   10,141.75x = 122,083,436.40
5. Step 5: Solve for x
   x = 122,083,436.40/10,141.75
6. Step 6: Final answer
   x = 12,037.71