Finding the Fourth Proportional to 9,410.57, 12,986.82 and 5,161.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.57 : 12,986.82 = 5,161.82 : x
2. Step 2: Convert to fraction form
   9,410.57/12,986.82 = 5,161.82/x
3. Step 3: Cross multiply
   9,410.57x = 12,986.82 × 5,161.82
4. Step 4: Simplify right side
   9,410.57x = 67,035,562.28
5. Step 5: Solve for x
   x = 67,035,562.28/9,410.57
6. Step 6: Final answer
   x = 7,123.44