Finding the Fourth Proportional to 12,609.17, 17,412.46 and 7,901.65

Step by Step Solution

1. Step 1: Write the proportion equation
   12,609.17 : 17,412.46 = 7,901.65 : x
2. Step 2: Convert to fraction form
   12,609.17/17,412.46 = 7,901.65/x
3. Step 3: Cross multiply
   12,609.17x = 17,412.46 × 7,901.65
4. Step 4: Simplify right side
   12,609.17x = 137,587,101.27
5. Step 5: Solve for x
   x = 137,587,101.27/12,609.17
6. Step 6: Final answer
   x = 10,911.67