Finding the Fourth Proportional to 10,231, 14,057.58 and 8,131.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,231 : 14,057.58 = 8,131.48 : x
2. Step 2: Convert to fraction form
   10,231/14,057.58 = 8,131.48/x
3. Step 3: Cross multiply
   10,231x = 14,057.58 × 8,131.48
4. Step 4: Simplify right side
   10,231x = 114,308,930.62
5. Step 5: Solve for x
   x = 114,308,930.62/10,231
6. Step 6: Final answer
   x = 11,172.80