Finding the Fourth Proportional to 12,395.28, 17,105.54 and 7,090.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,395.28 : 17,105.54 = 7,090.14 : x
2. Step 2: Convert to fraction form
   12,395.28/17,105.54 = 7,090.14/x
3. Step 3: Cross multiply
   12,395.28x = 17,105.54 × 7,090.14
4. Step 4: Simplify right side
   12,395.28x = 121,280,673.38
5. Step 5: Solve for x
   x = 121,280,673.38/12,395.28
6. Step 6: Final answer
   x = 9,784.42