Finding the Fourth Proportional to 9,410.32, 12,986.76 and 5,218.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.32 : 12,986.76 = 5,218.48 : x
2. Step 2: Convert to fraction form
   9,410.32/12,986.76 = 5,218.48/x
3. Step 3: Cross multiply
   9,410.32x = 12,986.76 × 5,218.48
4. Step 4: Simplify right side
   9,410.32x = 67,771,147.32
5. Step 5: Solve for x
   x = 67,771,147.32/9,410.32
6. Step 6: Final answer
   x = 7,201.79