Finding the Fourth Proportional to 22,383.96, 30,889.42 and 12,312.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,383.96 : 30,889.42 = 12,312.33 : x
2. Step 2: Convert to fraction form
   22,383.96/30,889.42 = 12,312.33/x
3. Step 3: Cross multiply
   22,383.96x = 30,889.42 × 12,312.33
4. Step 4: Simplify right side
   22,383.96x = 380,320,732.55
5. Step 5: Solve for x
   x = 380,320,732.55/22,383.96
6. Step 6: Final answer
   x = 16,990.77