Finding the Fourth Proportional to 21,450.83, 29,597.31 and 12,954.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,450.83 : 29,597.31 = 12,954.33 : x
2. Step 2: Convert to fraction form
   21,450.83/29,597.31 = 12,954.33/x
3. Step 3: Cross multiply
   21,450.83x = 29,597.31 × 12,954.33
4. Step 4: Simplify right side
   21,450.83x = 383,413,320.85
5. Step 5: Solve for x
   x = 383,413,320.85/21,450.83
6. Step 6: Final answer
   x = 17,874.06