Finding the Fourth Proportional to 11,141.46, 16,777.72 and 8,043.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,141.46 : 16,777.72 = 8,043.20 : x
2. Step 2: Convert to fraction form
   11,141.46/16,777.72 = 8,043.20/x
3. Step 3: Cross multiply
   11,141.46x = 16,777.72 × 8,043.20
4. Step 4: Simplify right side
   11,141.46x = 134,946,557.50
5. Step 5: Solve for x
   x = 134,946,557.50/11,141.46
6. Step 6: Final answer
   x = 12,112.11