Finding the Fourth Proportional to 9,409.27, 12,984.88 and 5,160.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,409.27 : 12,984.88 = 5,160.37 : x
2. Step 2: Convert to fraction form
   9,409.27/12,984.88 = 5,160.37/x
3. Step 3: Cross multiply
   9,409.27x = 12,984.88 × 5,160.37
4. Step 4: Simplify right side
   9,409.27x = 67,006,785.21
5. Step 5: Solve for x
   x = 67,006,785.21/9,409.27
6. Step 6: Final answer
   x = 7,121.36