Finding the Fourth Proportional to 9,112.54, 12,582.22 and 8,967.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,112.54 : 12,582.22 = 8,967.28 : x
2. Step 2: Convert to fraction form
   9,112.54/12,582.22 = 8,967.28/x
3. Step 3: Cross multiply
   9,112.54x = 12,582.22 × 8,967.28
4. Step 4: Simplify right side
   9,112.54x = 112,828,289.76
5. Step 5: Solve for x
   x = 112,828,289.76/9,112.54
6. Step 6: Final answer
   x = 12,381.65