Finding the Fourth Proportional to 13,131.14, 18,123.91 and 8,350.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.14 : 18,123.91 = 8,350.15 : x
2. Step 2: Convert to fraction form
   13,131.14/18,123.91 = 8,350.15/x
3. Step 3: Cross multiply
   13,131.14x = 18,123.91 × 8,350.15
4. Step 4: Simplify right side
   13,131.14x = 151,337,367.09
5. Step 5: Solve for x
   x = 151,337,367.09/13,131.14
6. Step 6: Final answer
   x = 11,525.07