Finding the Fourth Proportional to 11,840.49, 17,756.13 and 3,942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,840.49 : 17,756.13 = 3,942.72 : x
2. Step 2: Convert to fraction form
   11,840.49/17,756.13 = 3,942.72/x
3. Step 3: Cross multiply
   11,840.49x = 17,756.13 × 3,942.72
4. Step 4: Simplify right side
   11,840.49x = 70,007,448.87
5. Step 5: Solve for x
   x = 70,007,448.87/11,840.49
6. Step 6: Final answer
   x = 5,912.55