Finding the Fourth Proportional to 12,236.38, 16,885.91 and 7,131.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,236.38 : 16,885.91 = 7,131.56 : x
2. Step 2: Convert to fraction form
   12,236.38/16,885.91 = 7,131.56/x
3. Step 3: Cross multiply
   12,236.38x = 16,885.91 × 7,131.56
4. Step 4: Simplify right side
   12,236.38x = 120,422,813.72
5. Step 5: Solve for x
   x = 120,422,813.72/12,236.38
6. Step 6: Final answer
   x = 9,841.38