Finding the Fourth Proportional to 12,808.22, 17,673.20 and 7,141.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,808.22 : 17,673.20 = 7,141.74 : x
2. Step 2: Convert to fraction form
   12,808.22/17,673.20 = 7,141.74/x
3. Step 3: Cross multiply
   12,808.22x = 17,673.20 × 7,141.74
4. Step 4: Simplify right side
   12,808.22x = 126,217,399.37
5. Step 5: Solve for x
   x = 126,217,399.37/12,808.22
6. Step 6: Final answer
   x = 9,854.41