Finding the Fourth Proportional to 9,942.56, 13,720.74 and 5,466.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.56 : 13,720.74 = 5,466.39 : x
2. Step 2: Convert to fraction form
   9,942.56/13,720.74 = 5,466.39/x
3. Step 3: Cross multiply
   9,942.56x = 13,720.74 × 5,466.39
4. Step 4: Simplify right side
   9,942.56x = 75,002,833.66
5. Step 5: Solve for x
   x = 75,002,833.66/9,942.56
6. Step 6: Final answer
   x = 7,543.62