Finding the Fourth Proportional to 22,589.28, 31,181.76 and 13,160.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,589.28 : 31,181.76 = 13,160.88 : x
2. Step 2: Convert to fraction form
   22,589.28/31,181.76 = 13,160.88/x
3. Step 3: Cross multiply
   22,589.28x = 31,181.76 × 13,160.88
4. Step 4: Simplify right side
   22,589.28x = 410,379,401.55
5. Step 5: Solve for x
   x = 410,379,401.55/22,589.28
6. Step 6: Final answer
   x = 18,167.00