Finding the Fourth Proportional to 9,410.22, 12,986.12 and 5,218.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.22 : 12,986.12 = 5,218.46 : x
2. Step 2: Convert to fraction form
   9,410.22/12,986.12 = 5,218.46/x
3. Step 3: Cross multiply
   9,410.22x = 12,986.12 × 5,218.46
4. Step 4: Simplify right side
   9,410.22x = 67,767,547.78
5. Step 5: Solve for x
   x = 67,767,547.78/9,410.22
6. Step 6: Final answer
   x = 7,201.48