Finding the Fourth Proportional to 13,081.44, 18,056.34 and 8,892.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.44 : 18,056.34 = 8,892.12 : x
2. Step 2: Convert to fraction form
   13,081.44/18,056.34 = 8,892.12/x
3. Step 3: Cross multiply
   13,081.44x = 18,056.34 × 8,892.12
4. Step 4: Simplify right side
   13,081.44x = 160,559,142.04
5. Step 5: Solve for x
   x = 160,559,142.04/13,081.44
6. Step 6: Final answer
   x = 12,273.81