Finding the Fourth Proportional to 9,270.31, 12,792.81 and 5,291.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,270.31 : 12,792.81 = 5,291.05 : x
2. Step 2: Convert to fraction form
   9,270.31/12,792.81 = 5,291.05/x
3. Step 3: Cross multiply
   9,270.31x = 12,792.81 × 5,291.05
4. Step 4: Simplify right side
   9,270.31x = 67,687,397.35
5. Step 5: Solve for x
   x = 67,687,397.35/9,270.31
6. Step 6: Final answer
   x = 7,301.52