Finding the Fourth Proportional to 10,831.25, 16,247.45 and 3,436.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,831.25 : 16,247.45 = 3,436.28 : x
2. Step 2: Convert to fraction form
   10,831.25/16,247.45 = 3,436.28/x
3. Step 3: Cross multiply
   10,831.25x = 16,247.45 × 3,436.28
4. Step 4: Simplify right side
   10,831.25x = 55,830,847.83
5. Step 5: Solve for x
   x = 55,830,847.83/10,831.25
6. Step 6: Final answer
   x = 5,154.61