Finding the Fourth Proportional to 12,609.42, 17,395.16 and 8,134.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,609.42 : 17,395.16 = 8,134.61 : x
2. Step 2: Convert to fraction form
   12,609.42/17,395.16 = 8,134.61/x
3. Step 3: Cross multiply
   12,609.42x = 17,395.16 × 8,134.61
4. Step 4: Simplify right side
   12,609.42x = 141,502,812.69
5. Step 5: Solve for x
   x = 141,502,812.69/12,609.42
6. Step 6: Final answer
   x = 11,221.99