Finding the Fourth Proportional to 18,196.43, 27,280.78 and 5,709.25

Step by Step Solution

1. Step 1: Write the proportion equation
   18,196.43 : 27,280.78 = 5,709.25 : x
2. Step 2: Convert to fraction form
   18,196.43/27,280.78 = 5,709.25/x
3. Step 3: Cross multiply
   18,196.43x = 27,280.78 × 5,709.25
4. Step 4: Simplify right side
   18,196.43x = 155,752,813.04
5. Step 5: Solve for x
   x = 155,752,813.04/18,196.43
6. Step 6: Final answer
   x = 8,559.53