Finding the Fourth Proportional to 9,289.46, 12,824.42 and 7,160.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,289.46 : 12,824.42 = 7,160.32 : x
2. Step 2: Convert to fraction form
   9,289.46/12,824.42 = 7,160.32/x
3. Step 3: Cross multiply
   9,289.46x = 12,824.42 × 7,160.32
4. Step 4: Simplify right side
   9,289.46x = 91,826,951.01
5. Step 5: Solve for x
   x = 91,826,951.01/9,289.46
6. Step 6: Final answer
   x = 9,885.07