Finding the Fourth Proportional to 9,007.78, 12,432.81 and 5,282.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,007.78 : 12,432.81 = 5,282.98 : x
2. Step 2: Convert to fraction form
   9,007.78/12,432.81 = 5,282.98/x
3. Step 3: Cross multiply
   9,007.78x = 12,432.81 × 5,282.98
4. Step 4: Simplify right side
   9,007.78x = 65,682,286.57
5. Step 5: Solve for x
   x = 65,682,286.57/9,007.78
6. Step 6: Final answer
   x = 7,291.73