Finding the Fourth Proportional to 22,764, 31,414.32 and 12,828

Step by Step Solution

1. Step 1: Write the proportion equation
   22,764 : 31,414.32 = 12,828 : x
2. Step 2: Convert to fraction form
   22,764/31,414.32 = 12,828/x
3. Step 3: Cross multiply
   22,764x = 31,414.32 × 12,828
4. Step 4: Simplify right side
   22,764x = 402,982,896.96
5. Step 5: Solve for x
   x = 402,982,896.96/22,764
6. Step 6: Final answer
   x = 17,702.64