Finding the Fourth Proportional to 12,395.71, 17,105.61 and 7,091.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,395.71 : 17,105.61 = 7,091.02 : x
2. Step 2: Convert to fraction form
   12,395.71/17,105.61 = 7,091.02/x
3. Step 3: Cross multiply
   12,395.71x = 17,105.61 × 7,091.02
4. Step 4: Simplify right side
   12,395.71x = 121,296,222.62
5. Step 5: Solve for x
   x = 121,296,222.62/12,395.71
6. Step 6: Final answer
   x = 9,785.34