Finding the Fourth Proportional to 12,147.92, 16,763.18 and 7,111.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,147.92 : 16,763.18 = 7,111.42 : x
2. Step 2: Convert to fraction form
   12,147.92/16,763.18 = 7,111.42/x
3. Step 3: Cross multiply
   12,147.92x = 16,763.18 × 7,111.42
4. Step 4: Simplify right side
   12,147.92x = 119,210,013.52
5. Step 5: Solve for x
   x = 119,210,013.52/12,147.92
6. Step 6: Final answer
   x = 9,813.20