Finding the Fourth Proportional to 12,456.72, 18,683.64 and 3,223.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.72 : 18,683.64 = 3,223.44 : x
2. Step 2: Convert to fraction form
   12,456.72/18,683.64 = 3,223.44/x
3. Step 3: Cross multiply
   12,456.72x = 18,683.64 × 3,223.44
4. Step 4: Simplify right side
   12,456.72x = 60,225,592.52
5. Step 5: Solve for x
   x = 60,225,592.52/12,456.72
6. Step 6: Final answer
   x = 4,834.79