Finding the Fourth Proportional to 12,172.82, 18,293.31 and 7,243.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,172.82 : 18,293.31 = 7,243.22 : x
2. Step 2: Convert to fraction form
   12,172.82/18,293.31 = 7,243.22/x
3. Step 3: Cross multiply
   12,172.82x = 18,293.31 × 7,243.22
4. Step 4: Simplify right side
   12,172.82x = 132,502,468.86
5. Step 5: Solve for x
   x = 132,502,468.86/12,172.82
6. Step 6: Final answer
   x = 10,885.11