Finding the Fourth Proportional to 9,287.36, 12,817.43 and 5,307.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,287.36 : 12,817.43 = 5,307.69 : x
2. Step 2: Convert to fraction form
   9,287.36/12,817.43 = 5,307.69/x
3. Step 3: Cross multiply
   9,287.36x = 12,817.43 × 5,307.69
4. Step 4: Simplify right side
   9,287.36x = 68,030,918.50
5. Step 5: Solve for x
   x = 68,030,918.50/9,287.36
6. Step 6: Final answer
   x = 7,325.11