Finding the Fourth Proportional to 10,781.20, 16,167.48 and 3,851.92

Step by Step Solution

1. Step 1: Write the proportion equation
   10,781.20 : 16,167.48 = 3,851.92 : x
2. Step 2: Convert to fraction form
   10,781.20/16,167.48 = 3,851.92/x
3. Step 3: Cross multiply
   10,781.20x = 16,167.48 × 3,851.92
4. Step 4: Simplify right side
   10,781.20x = 62,275,839.56
5. Step 5: Solve for x
   x = 62,275,839.56/10,781.20
6. Step 6: Final answer
   x = 5,776.34