Finding the Fourth Proportional to 12,150.14, 16,742.21 and 9,317.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,150.14 : 16,742.21 = 9,317.39 : x
2. Step 2: Convert to fraction form
   12,150.14/16,742.21 = 9,317.39/x
3. Step 3: Cross multiply
   12,150.14x = 16,742.21 × 9,317.39
4. Step 4: Simplify right side
   12,150.14x = 155,993,569.73
5. Step 5: Solve for x
   x = 155,993,569.73/12,150.14
6. Step 6: Final answer
   x = 12,838.83