Finding the Fourth Proportional to 12,662.43, 18,981.47 and 8,503.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,662.43 : 18,981.47 = 8,503.59 : x
2. Step 2: Convert to fraction form
   12,662.43/18,981.47 = 8,503.59/x
3. Step 3: Cross multiply
   12,662.43x = 18,981.47 × 8,503.59
4. Step 4: Simplify right side
   12,662.43x = 161,410,683.08
5. Step 5: Solve for x
   x = 161,410,683.08/12,662.43
6. Step 6: Final answer
   x = 12,747.22