Finding the Fourth Proportional to 9,022.96, 12,452.16 and 5,485.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,022.96 : 12,452.16 = 5,485.60 : x
2. Step 2: Convert to fraction form
   9,022.96/12,452.16 = 5,485.60/x
3. Step 3: Cross multiply
   9,022.96x = 12,452.16 × 5,485.60
4. Step 4: Simplify right side
   9,022.96x = 68,307,568.90
5. Step 5: Solve for x
   x = 68,307,568.90/9,022.96
6. Step 6: Final answer
   x = 7,570.42