Finding the Fourth Proportional to 12,196.16, 16,840.24 and 9,359

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.16 : 16,840.24 = 9,359 : x
2. Step 2: Convert to fraction form
   12,196.16/16,840.24 = 9,359/x
3. Step 3: Cross multiply
   12,196.16x = 16,840.24 × 9,359
4. Step 4: Simplify right side
   12,196.16x = 157,607,806.16
5. Step 5: Solve for x
   x = 157,607,806.16/12,196.16
6. Step 6: Final answer
   x = 12,922.74