Finding the Fourth Proportional to 22,164.30, 30,582.55 and 13,212.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,164.30 : 30,582.55 = 13,212.64 : x
2. Step 2: Convert to fraction form
   22,164.30/30,582.55 = 13,212.64/x
3. Step 3: Cross multiply
   22,164.30x = 30,582.55 × 13,212.64
4. Step 4: Simplify right side
   22,164.30x = 404,076,223.43
5. Step 5: Solve for x
   x = 404,076,223.43/22,164.30
6. Step 6: Final answer
   x = 18,230.95