Finding the Fourth Proportional to 12,181.18, 18,250.29 and 8,665.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,181.18 : 18,250.29 = 8,665.96 : x
2. Step 2: Convert to fraction form
   12,181.18/18,250.29 = 8,665.96/x
3. Step 3: Cross multiply
   12,181.18x = 18,250.29 × 8,665.96
4. Step 4: Simplify right side
   12,181.18x = 158,156,283.13
5. Step 5: Solve for x
   x = 158,156,283.13/12,181.18
6. Step 6: Final answer
   x = 12,983.66