Finding the Fourth Proportional to 11,991.40, 17,988.94 and 3,227

Step by Step Solution

1. Step 1: Write the proportion equation
   11,991.40 : 17,988.94 = 3,227 : x
2. Step 2: Convert to fraction form
   11,991.40/17,988.94 = 3,227/x
3. Step 3: Cross multiply
   11,991.40x = 17,988.94 × 3,227
4. Step 4: Simplify right side
   11,991.40x = 58,050,309.38
5. Step 5: Solve for x
   x = 58,050,309.38/11,991.40
6. Step 6: Final answer
   x = 4,841.00