Finding the Fourth Proportional to 9,407.94, 12,982.59 and 5,216.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407.94 : 12,982.59 = 5,216.10 : x
2. Step 2: Convert to fraction form
   9,407.94/12,982.59 = 5,216.10/x
3. Step 3: Cross multiply
   9,407.94x = 12,982.59 × 5,216.10
4. Step 4: Simplify right side
   9,407.94x = 67,718,487.70
5. Step 5: Solve for x
   x = 67,718,487.70/9,407.94
6. Step 6: Final answer
   x = 7,198.01