Finding the Fourth Proportional to 10,831.50, 16,249.86 and 5,564.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,831.50 : 16,249.86 = 5,564.43 : x
2. Step 2: Convert to fraction form
   10,831.50/16,249.86 = 5,564.43/x
3. Step 3: Cross multiply
   10,831.50x = 16,249.86 × 5,564.43
4. Step 4: Simplify right side
   10,831.50x = 90,421,208.48
5. Step 5: Solve for x
   x = 90,421,208.48/10,831.50
6. Step 6: Final answer
   x = 8,347.99