Finding the Fourth Proportional to 12,395.71, 17,105.02 and 7,089.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,395.71 : 17,105.02 = 7,089.49 : x
2. Step 2: Convert to fraction form
   12,395.71/17,105.02 = 7,089.49/x
3. Step 3: Cross multiply
   12,395.71x = 17,105.02 × 7,089.49
4. Step 4: Simplify right side
   12,395.71x = 121,265,868.24
5. Step 5: Solve for x
   x = 121,265,868.24/12,395.71
6. Step 6: Final answer
   x = 9,782.89