Finding the Fourth Proportional to 12,181.82, 16,812.56 and 7,147.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,181.82 : 16,812.56 = 7,147.27 : x
2. Step 2: Convert to fraction form
   12,181.82/16,812.56 = 7,147.27/x
3. Step 3: Cross multiply
   12,181.82x = 16,812.56 × 7,147.27
4. Step 4: Simplify right side
   12,181.82x = 120,163,785.91
5. Step 5: Solve for x
   x = 120,163,785.91/12,181.82
6. Step 6: Final answer
   x = 9,864.19