Finding the Fourth Proportional to 22,384.42, 30,890.57 and 12,313.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,384.42 : 30,890.57 = 12,313.89 : x
2. Step 2: Convert to fraction form
   22,384.42/30,890.57 = 12,313.89/x
3. Step 3: Cross multiply
   22,384.42x = 30,890.57 × 12,313.89
4. Step 4: Simplify right side
   22,384.42x = 380,383,081.02
5. Step 5: Solve for x
   x = 380,383,081.02/22,384.42
6. Step 6: Final answer
   x = 16,993.21