Finding the Fourth Proportional to 11,783.25, 17,679.42 and 3,992.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,783.25 : 17,679.42 = 3,992.04 : x
2. Step 2: Convert to fraction form
   11,783.25/17,679.42 = 3,992.04/x
3. Step 3: Cross multiply
   11,783.25x = 17,679.42 × 3,992.04
4. Step 4: Simplify right side
   11,783.25x = 70,576,951.82
5. Step 5: Solve for x
   x = 70,576,951.82/11,783.25
6. Step 6: Final answer
   x = 5,989.60