Finding the Fourth Proportional to 13,727.22, 18,943.51 and 7,439.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,727.22 : 18,943.51 = 7,439.61 : x
2. Step 2: Convert to fraction form
   13,727.22/18,943.51 = 7,439.61/x
3. Step 3: Cross multiply
   13,727.22x = 18,943.51 × 7,439.61
4. Step 4: Simplify right side
   13,727.22x = 140,932,194.52
5. Step 5: Solve for x
   x = 140,932,194.52/13,727.22
6. Step 6: Final answer
   x = 10,266.63