Finding the Fourth Proportional to 10,831.42, 16,247.23 and 3,811.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,831.42 : 16,247.23 = 3,811.49 : x
2. Step 2: Convert to fraction form
   10,831.42/16,247.23 = 3,811.49/x
3. Step 3: Cross multiply
   10,831.42x = 16,247.23 × 3,811.49
4. Step 4: Simplify right side
   10,831.42x = 61,926,124.83
5. Step 5: Solve for x
   x = 61,926,124.83/10,831.42
6. Step 6: Final answer
   x = 5,717.27