Finding the Fourth Proportional to 21,831.73, 32,744.86 and 7,039.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,831.73 : 32,744.86 = 7,039.10 : x
2. Step 2: Convert to fraction form
   21,831.73/32,744.86 = 7,039.10/x
3. Step 3: Cross multiply
   21,831.73x = 32,744.86 × 7,039.10
4. Step 4: Simplify right side
   21,831.73x = 230,494,408.29
5. Step 5: Solve for x
   x = 230,494,408.29/21,831.73
6. Step 6: Final answer
   x = 10,557.77