Finding the Fourth Proportional to 12,613.14, 17,406.72 and 7,309.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.14 : 17,406.72 = 7,309.62 : x
2. Step 2: Convert to fraction form
   12,613.14/17,406.72 = 7,309.62/x
3. Step 3: Cross multiply
   12,613.14x = 17,406.72 × 7,309.62
4. Step 4: Simplify right side
   12,613.14x = 127,236,508.65
5. Step 5: Solve for x
   x = 127,236,508.65/12,613.14
6. Step 6: Final answer
   x = 10,087.62