Finding the Fourth Proportional to 9,272.43, 12,792.78 and 5,290.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,272.43 : 12,792.78 = 5,290.68 : x
2. Step 2: Convert to fraction form
   9,272.43/12,792.78 = 5,290.68/x
3. Step 3: Cross multiply
   9,272.43x = 12,792.78 × 5,290.68
4. Step 4: Simplify right side
   9,272.43x = 67,682,505.29
5. Step 5: Solve for x
   x = 67,682,505.29/9,272.43
6. Step 6: Final answer
   x = 7,299.33