Finding the Fourth Proportional to 22,770, 31,422.60 and 12,834

Step by Step Solution

1. Step 1: Write the proportion equation
   22,770 : 31,422.60 = 12,834 : x
2. Step 2: Convert to fraction form
   22,770/31,422.60 = 12,834/x
3. Step 3: Cross multiply
   22,770x = 31,422.60 × 12,834
4. Step 4: Simplify right side
   22,770x = 403,277,648.40
5. Step 5: Solve for x
   x = 403,277,648.40/22,770
6. Step 6: Final answer
   x = 17,710.92