Finding the Fourth Proportional to 13,196.19, 18,210.77 and 7,227.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,196.19 : 18,210.77 = 7,227.87 : x
2. Step 2: Convert to fraction form
   13,196.19/18,210.77 = 7,227.87/x
3. Step 3: Cross multiply
   13,196.19x = 18,210.77 × 7,227.87
4. Step 4: Simplify right side
   13,196.19x = 131,625,042.02
5. Step 5: Solve for x
   x = 131,625,042.02/13,196.19
6. Step 6: Final answer
   x = 9,974.47