Finding the Fourth Proportional to 22,160, 30,582.96 and 12,224

Step by Step Solution

1. Step 1: Write the proportion equation
   22,160 : 30,582.96 = 12,224 : x
2. Step 2: Convert to fraction form
   22,160/30,582.96 = 12,224/x
3. Step 3: Cross multiply
   22,160x = 30,582.96 × 12,224
4. Step 4: Simplify right side
   22,160x = 373,846,103.04
5. Step 5: Solve for x
   x = 373,846,103.04/22,160
6. Step 6: Final answer
   x = 16,870.31