Finding the Fourth Proportional to 22,894.43, 31,592.70 and 12,821.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,894.43 : 31,592.70 = 12,821.15 : x
2. Step 2: Convert to fraction form
   22,894.43/31,592.70 = 12,821.15/x
3. Step 3: Cross multiply
   22,894.43x = 31,592.70 × 12,821.15
4. Step 4: Simplify right side
   22,894.43x = 405,054,745.61
5. Step 5: Solve for x
   x = 405,054,745.61/22,894.43
6. Step 6: Final answer
   x = 17,692.28