Finding the Fourth Proportional to 11,990.82, 17,988.27 and 3,669.96

Step by Step Solution

1. Step 1: Write the proportion equation
   11,990.82 : 17,988.27 = 3,669.96 : x
2. Step 2: Convert to fraction form
   11,990.82/17,988.27 = 3,669.96/x
3. Step 3: Cross multiply
   11,990.82x = 17,988.27 × 3,669.96
4. Step 4: Simplify right side
   11,990.82x = 66,016,231.37
5. Step 5: Solve for x
   x = 66,016,231.37/11,990.82
6. Step 6: Final answer
   x = 5,505.56