Finding the Fourth Proportional to 22,383.35, 30,888.37 and 12,311.79

Step by Step Solution

1. Step 1: Write the proportion equation
   22,383.35 : 30,888.37 = 12,311.79 : x
2. Step 2: Convert to fraction form
   22,383.35/30,888.37 = 12,311.79/x
3. Step 3: Cross multiply
   22,383.35x = 30,888.37 × 12,311.79
4. Step 4: Simplify right side
   22,383.35x = 380,291,091.72
5. Step 5: Solve for x
   x = 380,291,091.72/22,383.35
6. Step 6: Final answer
   x = 16,989.91