Finding the Fourth Proportional to 9,942.36, 13,720.82 and 5,466.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.36 : 13,720.82 = 5,466.45 : x
2. Step 2: Convert to fraction form
   9,942.36/13,720.82 = 5,466.45/x
3. Step 3: Cross multiply
   9,942.36x = 13,720.82 × 5,466.45
4. Step 4: Simplify right side
   9,942.36x = 75,004,149.16
5. Step 5: Solve for x
   x = 75,004,149.16/9,942.36
6. Step 6: Final answer
   x = 7,543.90