Finding the Fourth Proportional to 11,837.58, 17,757.33 and 3,939.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,837.58 : 17,757.33 = 3,939.81 : x
2. Step 2: Convert to fraction form
   11,837.58/17,757.33 = 3,939.81/x
3. Step 3: Cross multiply
   11,837.58x = 17,757.33 × 3,939.81
4. Step 4: Simplify right side
   11,837.58x = 69,960,506.31
5. Step 5: Solve for x
   x = 69,960,506.31/11,837.58
6. Step 6: Final answer
   x = 5,910.03