Finding the Fourth Proportional to 13,196.07, 18,210.62 and 7,227.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,196.07 : 18,210.62 = 7,227.61 : x
2. Step 2: Convert to fraction form
   13,196.07/18,210.62 = 7,227.61/x
3. Step 3: Cross multiply
   13,196.07x = 18,210.62 × 7,227.61
4. Step 4: Simplify right side
   13,196.07x = 131,619,215.29
5. Step 5: Solve for x
   x = 131,619,215.29/13,196.07
6. Step 6: Final answer
   x = 9,974.12