Finding the Fourth Proportional to 13,196.25, 18,211.13 and 7,227.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,196.25 : 18,211.13 = 7,227.87 : x
2. Step 2: Convert to fraction form
   13,196.25/18,211.13 = 7,227.87/x
3. Step 3: Cross multiply
   13,196.25x = 18,211.13 × 7,227.87
4. Step 4: Simplify right side
   13,196.25x = 131,627,644.05
5. Step 5: Solve for x
   x = 131,627,644.05/13,196.25
6. Step 6: Final answer
   x = 9,974.62