Finding the Fourth Proportional to 9,942.46, 13,720.72 and 5,466.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,942.46 : 13,720.72 = 5,466.18 : x
2. Step 2: Convert to fraction form
   9,942.46/13,720.72 = 5,466.18/x
3. Step 3: Cross multiply
   9,942.46x = 13,720.72 × 5,466.18
4. Step 4: Simplify right side
   9,942.46x = 74,999,925.25
5. Step 5: Solve for x
   x = 74,999,925.25/9,942.46
6. Step 6: Final answer
   x = 7,543.40