Finding the Fourth Proportional to 10,831.46, 16,237.59 and 5,281.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,831.46 : 16,237.59 = 5,281.70 : x
2. Step 2: Convert to fraction form
   10,831.46/16,237.59 = 5,281.70/x
3. Step 3: Cross multiply
   10,831.46x = 16,237.59 × 5,281.70
4. Step 4: Simplify right side
   10,831.46x = 85,762,079.10
5. Step 5: Solve for x
   x = 85,762,079.10/10,831.46
6. Step 6: Final answer
   x = 7,917.87