Finding the Fourth Proportional to 12,527.40, 17,287.20 and 7,222.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,527.40 : 17,287.20 = 7,222.29 : x
2. Step 2: Convert to fraction form
   12,527.40/17,287.20 = 7,222.29/x
3. Step 3: Cross multiply
   12,527.40x = 17,287.20 × 7,222.29
4. Step 4: Simplify right side
   12,527.40x = 124,853,171.69
5. Step 5: Solve for x
   x = 124,853,171.69/12,527.40
6. Step 6: Final answer
   x = 9,966.41