Finding the Fourth Proportional to 9,942.55, 13,720.73 and 5,466.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.55 : 13,720.73 = 5,466.38 : x
2. Step 2: Convert to fraction form
   9,942.55/13,720.73 = 5,466.38/x
3. Step 3: Cross multiply
   9,942.55x = 13,720.73 × 5,466.38
4. Step 4: Simplify right side
   9,942.55x = 75,002,689.76
5. Step 5: Solve for x
   x = 75,002,689.76/9,942.55
6. Step 6: Final answer
   x = 7,543.61