Finding the Fourth Proportional to 9,269.15, 12,791.30 and 5,290.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,269.15 : 12,791.30 = 5,290.32 : x
2. Step 2: Convert to fraction form
   9,269.15/12,791.30 = 5,290.32/x
3. Step 3: Cross multiply
   9,269.15x = 12,791.30 × 5,290.32
4. Step 4: Simplify right side
   9,269.15x = 67,670,091.73
5. Step 5: Solve for x
   x = 67,670,091.73/9,269.15
6. Step 6: Final answer
   x = 7,300.58