Finding the Fourth Proportional to 22,238.28, 30,687.66 and 12,164.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,238.28 : 30,687.66 = 12,164.76 : x
2. Step 2: Convert to fraction form
   22,238.28/30,687.66 = 12,164.76/x
3. Step 3: Cross multiply
   22,238.28x = 30,687.66 × 12,164.76
4. Step 4: Simplify right side
   22,238.28x = 373,308,018.86
5. Step 5: Solve for x
   x = 373,308,018.86/22,238.28
6. Step 6: Final answer
   x = 16,786.73