Finding the Fourth Proportional to 22,216.34, 30,658.48 and 12,144.79

Step by Step Solution

1. Step 1: Write the proportion equation
   22,216.34 : 30,658.48 = 12,144.79 : x
2. Step 2: Convert to fraction form
   22,216.34/30,658.48 = 12,144.79/x
3. Step 3: Cross multiply
   22,216.34x = 30,658.48 × 12,144.79
4. Step 4: Simplify right side
   22,216.34x = 372,340,705.14
5. Step 5: Solve for x
   x = 372,340,705.14/22,216.34
6. Step 6: Final answer
   x = 16,759.77