Finding the Fourth Proportional to 12,443.22, 17,170.38 and 7,662.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.22 : 17,170.38 = 7,662.42 : x
2. Step 2: Convert to fraction form
   12,443.22/17,170.38 = 7,662.42/x
3. Step 3: Cross multiply
   12,443.22x = 17,170.38 × 7,662.42
4. Step 4: Simplify right side
   12,443.22x = 131,566,663.12
5. Step 5: Solve for x
   x = 131,566,663.12/12,443.22
6. Step 6: Final answer
   x = 10,573.36