Finding the Fourth Proportional to 12,785, 17,644.02 and 7,196.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,785 : 17,644.02 = 7,196.36 : x
2. Step 2: Convert to fraction form
   12,785/17,644.02 = 7,196.36/x
3. Step 3: Cross multiply
   12,785x = 17,644.02 × 7,196.36
4. Step 4: Simplify right side
   12,785x = 126,972,719.77
5. Step 5: Solve for x
   x = 126,972,719.77/12,785
6. Step 6: Final answer
   x = 9,931.38