Finding the Fourth Proportional to 16,791.38, 25,138.43 and 12,648.83

Step by Step Solution

1. Step 1: Write the proportion equation
   16,791.38 : 25,138.43 = 12,648.83 : x
2. Step 2: Convert to fraction form
   16,791.38/25,138.43 = 12,648.83/x
3. Step 3: Cross multiply
   16,791.38x = 25,138.43 × 12,648.83
4. Step 4: Simplify right side
   16,791.38x = 317,971,664.29
5. Step 5: Solve for x
   x = 317,971,664.29/16,791.38
6. Step 6: Final answer
   x = 18,936.61