Finding the Fourth Proportional to 22,383.81, 30,889.67 and 12,312.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,383.81 : 30,889.67 = 12,312.27 : x
2. Step 2: Convert to fraction form
   22,383.81/30,889.67 = 12,312.27/x
3. Step 3: Cross multiply
   22,383.81x = 30,889.67 × 12,312.27
4. Step 4: Simplify right side
   22,383.81x = 380,321,895.69
5. Step 5: Solve for x
   x = 380,321,895.69/22,383.81
6. Step 6: Final answer
   x = 16,990.94