Finding the Fourth Proportional to 12,427.83, 17,156 and 8,181.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,427.83 : 17,156 = 8,181.12 : x
2. Step 2: Convert to fraction form
   12,427.83/17,156 = 8,181.12/x
3. Step 3: Cross multiply
   12,427.83x = 17,156 × 8,181.12
4. Step 4: Simplify right side
   12,427.83x = 140,355,294.72
5. Step 5: Solve for x
   x = 140,355,294.72/12,427.83
6. Step 6: Final answer
   x = 11,293.63