Finding the Fourth Proportional to 12,192.48, 16,819.31 and 7,153.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,192.48 : 16,819.31 = 7,153.32 : x
2. Step 2: Convert to fraction form
   12,192.48/16,819.31 = 7,153.32/x
3. Step 3: Cross multiply
   12,192.48x = 16,819.31 × 7,153.32
4. Step 4: Simplify right side
   12,192.48x = 120,313,906.61
5. Step 5: Solve for x
   x = 120,313,906.61/12,192.48
6. Step 6: Final answer
   x = 9,867.88