Finding the Fourth Proportional to 9,410.31, 12,986.24 and 5,218.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.31 : 12,986.24 = 5,218.59 : x
2. Step 2: Convert to fraction form
   9,410.31/12,986.24 = 5,218.59/x
3. Step 3: Cross multiply
   9,410.31x = 12,986.24 × 5,218.59
4. Step 4: Simplify right side
   9,410.31x = 67,769,836.11
5. Step 5: Solve for x
   x = 67,769,836.11/9,410.31
6. Step 6: Final answer
   x = 7,201.66