Finding the Fourth Proportional to 16,547.34, 24,789.72 and 12,831.36

Step by Step Solution

1. Step 1: Write the proportion equation
   16,547.34 : 24,789.72 = 12,831.36 : x
2. Step 2: Convert to fraction form
   16,547.34/24,789.72 = 12,831.36/x
3. Step 3: Cross multiply
   16,547.34x = 24,789.72 × 12,831.36
4. Step 4: Simplify right side
   16,547.34x = 318,085,821.62
5. Step 5: Solve for x
   x = 318,085,821.62/16,547.34
6. Step 6: Final answer
   x = 19,222.78