Finding the Fourth Proportional to 9,410.24, 12,985.43 and 5,160.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.24 : 12,985.43 = 5,160.62 : x
2. Step 2: Convert to fraction form
   9,410.24/12,985.43 = 5,160.62/x
3. Step 3: Cross multiply
   9,410.24x = 12,985.43 × 5,160.62
4. Step 4: Simplify right side
   9,410.24x = 67,012,843.96
5. Step 5: Solve for x
   x = 67,012,843.96/9,410.24
6. Step 6: Final answer
   x = 7,121.27