Finding the Fourth Proportional to 12,215.04, 18,323.46 and 4,423.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,215.04 : 18,323.46 = 4,423.92 : x
2. Step 2: Convert to fraction form
   12,215.04/18,323.46 = 4,423.92/x
3. Step 3: Cross multiply
   12,215.04x = 18,323.46 × 4,423.92
4. Step 4: Simplify right side
   12,215.04x = 81,061,521.16
5. Step 5: Solve for x
   x = 81,061,521.16/12,215.04
6. Step 6: Final answer
   x = 6,636.21