Finding the Fourth Proportional to 9,410.67, 12,986.69 and 5,218.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.67 : 12,986.69 = 5,218.92 : x
2. Step 2: Convert to fraction form
   9,410.67/12,986.69 = 5,218.92/x
3. Step 3: Cross multiply
   9,410.67x = 12,986.69 × 5,218.92
4. Step 4: Simplify right side
   9,410.67x = 67,776,470.08
5. Step 5: Solve for x
   x = 67,776,470.08/9,410.67
6. Step 6: Final answer
   x = 7,202.09