Finding the Fourth Proportional to 12,271.72, 16,935.42 and 6,966.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,271.72 : 16,935.42 = 6,966.40 : x
2. Step 2: Convert to fraction form
   12,271.72/16,935.42 = 6,966.40/x
3. Step 3: Cross multiply
   12,271.72x = 16,935.42 × 6,966.40
4. Step 4: Simplify right side
   12,271.72x = 117,978,909.89
5. Step 5: Solve for x
   x = 117,978,909.89/12,271.72
6. Step 6: Final answer
   x = 9,613.89