Finding the Fourth Proportional to 9,410.16, 12,986.10 and 5,218.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.16 : 12,986.10 = 5,218.68 : x
2. Step 2: Convert to fraction form
   9,410.16/12,986.10 = 5,218.68/x
3. Step 3: Cross multiply
   9,410.16x = 12,986.10 × 5,218.68
4. Step 4: Simplify right side
   9,410.16x = 67,770,300.35
5. Step 5: Solve for x
   x = 67,770,300.35/9,410.16
6. Step 6: Final answer
   x = 7,201.82