Finding the Fourth Proportional to 22,118.68, 30,521.46 and 13,164.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,118.68 : 30,521.46 = 13,164.42 : x
2. Step 2: Convert to fraction form
   22,118.68/30,521.46 = 13,164.42/x
3. Step 3: Cross multiply
   22,118.68x = 30,521.46 × 13,164.42
4. Step 4: Simplify right side
   22,118.68x = 401,797,318.45
5. Step 5: Solve for x
   x = 401,797,318.45/22,118.68
6. Step 6: Final answer
   x = 18,165.52