Finding the Fourth Proportional to 12,469.58, 17,206.68 and 7,688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,469.58 : 17,206.68 = 7,688.72 : x
2. Step 2: Convert to fraction form
   12,469.58/17,206.68 = 7,688.72/x
3. Step 3: Cross multiply
   12,469.58x = 17,206.68 × 7,688.72
4. Step 4: Simplify right side
   12,469.58x = 132,297,344.65
5. Step 5: Solve for x
   x = 132,297,344.65/12,469.58
6. Step 6: Final answer
   x = 10,609.61