Finding the Fourth Proportional to 12,215.97, 18,326.70 and 5,196.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,215.97 : 18,326.70 = 5,196.33 : x
2. Step 2: Convert to fraction form
   12,215.97/18,326.70 = 5,196.33/x
3. Step 3: Cross multiply
   12,215.97x = 18,326.70 × 5,196.33
4. Step 4: Simplify right side
   12,215.97x = 95,231,581.01
5. Step 5: Solve for x
   x = 95,231,581.01/12,215.97
6. Step 6: Final answer
   x = 7,795.66