Finding the Fourth Proportional to 9,410.04, 12,986.33 and 5,218.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.04 : 12,986.33 = 5,218.30 : x
2. Step 2: Convert to fraction form
   9,410.04/12,986.33 = 5,218.30/x
3. Step 3: Cross multiply
   9,410.04x = 12,986.33 × 5,218.30
4. Step 4: Simplify right side
   9,410.04x = 67,766,565.84
5. Step 5: Solve for x
   x = 67,766,565.84/9,410.04
6. Step 6: Final answer
   x = 7,201.52