Finding the Fourth Proportional to 9,028.26, 12,456.18 and 5,490.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,028.26 : 12,456.18 = 5,490.18 : x
2. Step 2: Convert to fraction form
   9,028.26/12,456.18 = 5,490.18/x
3. Step 3: Cross multiply
   9,028.26x = 12,456.18 × 5,490.18
4. Step 4: Simplify right side
   9,028.26x = 68,386,670.31
5. Step 5: Solve for x
   x = 68,386,670.31/9,028.26
6. Step 6: Final answer
   x = 7,574.73