Finding the Fourth Proportional to 12,196.96, 18,242.68 and 7,187.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,196.96 : 18,242.68 = 7,187.44 : x
2. Step 2: Convert to fraction form
   12,196.96/18,242.68 = 7,187.44/x
3. Step 3: Cross multiply
   12,196.96x = 18,242.68 × 7,187.44
4. Step 4: Simplify right side
   12,196.96x = 131,118,167.94
5. Step 5: Solve for x
   x = 131,118,167.94/12,196.96
6. Step 6: Final answer
   x = 10,750.07