Finding the Fourth Proportional to 9,269.17, 12,791.46 and 5,290.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,269.17 : 12,791.46 = 5,290.20 : x
2. Step 2: Convert to fraction form
   9,269.17/12,791.46 = 5,290.20/x
3. Step 3: Cross multiply
   9,269.17x = 12,791.46 × 5,290.20
4. Step 4: Simplify right side
   9,269.17x = 67,669,381.69
5. Step 5: Solve for x
   x = 67,669,381.69/9,269.17
6. Step 6: Final answer
   x = 7,300.48