Finding the Fourth Proportional to 9,007.45, 12,431.53 and 5,028.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,007.45 : 12,431.53 = 5,028.78 : x
2. Step 2: Convert to fraction form
   9,007.45/12,431.53 = 5,028.78/x
3. Step 3: Cross multiply
   9,007.45x = 12,431.53 × 5,028.78
4. Step 4: Simplify right side
   9,007.45x = 62,515,454.05
5. Step 5: Solve for x
   x = 62,515,454.05/9,007.45
6. Step 6: Final answer
   x = 6,940.41