Finding the Fourth Proportional to 9,022.50, 12,451.05 and 5,485.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,022.50 : 12,451.05 = 5,485.05 : x
2. Step 2: Convert to fraction form
   9,022.50/12,451.05 = 5,485.05/x
3. Step 3: Cross multiply
   9,022.50x = 12,451.05 × 5,485.05
4. Step 4: Simplify right side
   9,022.50x = 68,294,631.80
5. Step 5: Solve for x
   x = 68,294,631.80/9,022.50
6. Step 6: Final answer
   x = 7,569.37