Finding the Fourth Proportional to 11,786.22, 17,675.60 and 3,993.21

Step by Step Solution

1. Step 1: Write the proportion equation
   11,786.22 : 17,675.60 = 3,993.21 : x
2. Step 2: Convert to fraction form
   11,786.22/17,675.60 = 3,993.21/x
3. Step 3: Cross multiply
   11,786.22x = 17,675.60 × 3,993.21
4. Step 4: Simplify right side
   11,786.22x = 70,582,362.71
5. Step 5: Solve for x
   x = 70,582,362.71/11,786.22
6. Step 6: Final answer
   x = 5,988.55