Finding the Fourth Proportional to 12,196.98, 16,825.64 and 7,713.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.98 : 16,825.64 = 7,713.18 : x
2. Step 2: Convert to fraction form
   12,196.98/16,825.64 = 7,713.18/x
3. Step 3: Cross multiply
   12,196.98x = 16,825.64 × 7,713.18
4. Step 4: Simplify right side
   12,196.98x = 129,779,189.94
5. Step 5: Solve for x
   x = 129,779,189.94/12,196.98
6. Step 6: Final answer
   x = 10,640.27