Finding the Fourth Proportional to 13,141.14, 18,128.04 and 8,892.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,141.14 : 18,128.04 = 8,892.42 : x
2. Step 2: Convert to fraction form
   13,141.14/18,128.04 = 8,892.42/x
3. Step 3: Cross multiply
   13,141.14x = 18,128.04 × 8,892.42
4. Step 4: Simplify right side
   13,141.14x = 161,202,145.46
5. Step 5: Solve for x
   x = 161,202,145.46/13,141.14
6. Step 6: Final answer
   x = 12,266.98