Finding the Fourth Proportional to 22,238.43, 30,688.78 and 12,167.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,238.43 : 30,688.78 = 12,167.16 : x
2. Step 2: Convert to fraction form
   22,238.43/30,688.78 = 12,167.16/x
3. Step 3: Cross multiply
   22,238.43x = 30,688.78 × 12,167.16
4. Step 4: Simplify right side
   22,238.43x = 373,395,296.46
5. Step 5: Solve for x
   x = 373,395,296.46/22,238.43
6. Step 6: Final answer
   x = 16,790.54