Finding the Fourth Proportional to 9,766.47, 13,477.67 and 5,290.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,766.47 : 13,477.67 = 5,290.12 : x
2. Step 2: Convert to fraction form
   9,766.47/13,477.67 = 5,290.12/x
3. Step 3: Cross multiply
   9,766.47x = 13,477.67 × 5,290.12
4. Step 4: Simplify right side
   9,766.47x = 71,298,491.62
5. Step 5: Solve for x
   x = 71,298,491.62/9,766.47
6. Step 6: Final answer
   x = 7,300.33