Finding the Fourth Proportional to 18,339.27, 27,513.56 and 8,485.62

Step by Step Solution

1. Step 1: Write the proportion equation
   18,339.27 : 27,513.56 = 8,485.62 : x
2. Step 2: Convert to fraction form
   18,339.27/27,513.56 = 8,485.62/x
3. Step 3: Cross multiply
   18,339.27x = 27,513.56 × 8,485.62
4. Step 4: Simplify right side
   18,339.27x = 233,469,615.01
5. Step 5: Solve for x
   x = 233,469,615.01/18,339.27
6. Step 6: Final answer
   x = 12,730.58