Finding the Fourth Proportional to 10,831.81, 16,248.29 and 3,436.85

Step by Step Solution

1. Step 1: Write the proportion equation
   10,831.81 : 16,248.29 = 3,436.85 : x
2. Step 2: Convert to fraction form
   10,831.81/16,248.29 = 3,436.85/x
3. Step 3: Cross multiply
   10,831.81x = 16,248.29 × 3,436.85
4. Step 4: Simplify right side
   10,831.81x = 55,842,886.86
5. Step 5: Solve for x
   x = 55,842,886.86/10,831.81
6. Step 6: Final answer
   x = 5,155.45