Finding the Fourth Proportional to 12,785.22, 17,644.41 and 7,196.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,785.22 : 17,644.41 = 7,196.58 : x
2. Step 2: Convert to fraction form
   12,785.22/17,644.41 = 7,196.58/x
3. Step 3: Cross multiply
   12,785.22x = 17,644.41 × 7,196.58
4. Step 4: Simplify right side
   12,785.22x = 126,979,408.12
5. Step 5: Solve for x
   x = 126,979,408.12/12,785.22
6. Step 6: Final answer
   x = 9,931.73