Finding the Fourth Proportional to 22,382.96, 30,888.05 and 12,311.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,382.96 : 30,888.05 = 12,311.33 : x
2. Step 2: Convert to fraction form
   22,382.96/30,888.05 = 12,311.33/x
3. Step 3: Cross multiply
   22,382.96x = 30,888.05 × 12,311.33
4. Step 4: Simplify right side
   22,382.96x = 380,272,760.61
5. Step 5: Solve for x
   x = 380,272,760.61/22,382.96
6. Step 6: Final answer
   x = 16,989.39