Finding the Fourth Proportional to 22,233.57, 30,690.05 and 12,805.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,233.57 : 30,690.05 = 12,805.89 : x
2. Step 2: Convert to fraction form
   22,233.57/30,690.05 = 12,805.89/x
3. Step 3: Cross multiply
   22,233.57x = 30,690.05 × 12,805.89
4. Step 4: Simplify right side
   22,233.57x = 393,013,340.37
5. Step 5: Solve for x
   x = 393,013,340.37/22,233.57
6. Step 6: Final answer
   x = 17,676.57