Finding the Fourth Proportional to 12,196.34, 16,825.94 and 8,218.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.34 : 16,825.94 = 8,218.74 : x
2. Step 2: Convert to fraction form
   12,196.34/16,825.94 = 8,218.74/x
3. Step 3: Cross multiply
   12,196.34x = 16,825.94 × 8,218.74
4. Step 4: Simplify right side
   12,196.34x = 138,288,026.12
5. Step 5: Solve for x
   x = 138,288,026.12/12,196.34
6. Step 6: Final answer
   x = 11,338.49