Finding the Fourth Proportional to 9,268.83, 12,791.39 and 5,290.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,268.83 : 12,791.39 = 5,290.25 : x
2. Step 2: Convert to fraction form
   9,268.83/12,791.39 = 5,290.25/x
3. Step 3: Cross multiply
   9,268.83x = 12,791.39 × 5,290.25
4. Step 4: Simplify right side
   9,268.83x = 67,669,560.54
5. Step 5: Solve for x
   x = 67,669,560.54/9,268.83
6. Step 6: Final answer
   x = 7,300.77