Finding the Fourth Proportional to 12,196.31, 16,828.43 and 9,366.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.31 : 16,828.43 = 9,366.86 : x
2. Step 2: Convert to fraction form
   12,196.31/16,828.43 = 9,366.86/x
3. Step 3: Cross multiply
   12,196.31x = 16,828.43 × 9,366.86
4. Step 4: Simplify right side
   12,196.31x = 157,629,543.07
5. Step 5: Solve for x
   x = 157,629,543.07/12,196.31
6. Step 6: Final answer
   x = 12,924.37