Finding the Fourth Proportional to 11,837.67, 17,756.96 and 3,940.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,837.67 : 17,756.96 = 3,940.89 : x
2. Step 2: Convert to fraction form
   11,837.67/17,756.96 = 3,940.89/x
3. Step 3: Cross multiply
   11,837.67x = 17,756.96 × 3,940.89
4. Step 4: Simplify right side
   11,837.67x = 69,978,206.39
5. Step 5: Solve for x
   x = 69,978,206.39/11,837.67
6. Step 6: Final answer
   x = 5,911.48