Finding the Fourth Proportional to 13,196.76, 18,210.78 and 7,227.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,196.76 : 18,210.78 = 7,227.24 : x
2. Step 2: Convert to fraction form
   13,196.76/18,210.78 = 7,227.24/x
3. Step 3: Cross multiply
   13,196.76x = 18,210.78 × 7,227.24
4. Step 4: Simplify right side
   13,196.76x = 131,613,677.65
5. Step 5: Solve for x
   x = 131,613,677.65/13,196.76
6. Step 6: Final answer
   x = 9,973.18