Finding the Fourth Proportional to 9,268.33, 12,791.21 and 5,290.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,268.33 : 12,791.21 = 5,290.04 : x
2. Step 2: Convert to fraction form
   9,268.33/12,791.21 = 5,290.04/x
3. Step 3: Cross multiply
   9,268.33x = 12,791.21 × 5,290.04
4. Step 4: Simplify right side
   9,268.33x = 67,665,986.10
5. Step 5: Solve for x
   x = 67,665,986.10/9,268.33
6. Step 6: Final answer
   x = 7,300.78