Finding the Fourth Proportional to 11,731.20, 17,595.72 and 3,940.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,731.20 : 17,595.72 = 3,940.08 : x
2. Step 2: Convert to fraction form
   11,731.20/17,595.72 = 3,940.08/x
3. Step 3: Cross multiply
   11,731.20x = 17,595.72 × 3,940.08
4. Step 4: Simplify right side
   11,731.20x = 69,328,544.46
5. Step 5: Solve for x
   x = 69,328,544.46/11,731.20
6. Step 6: Final answer
   x = 5,909.76