Finding the Fourth Proportional to 22,518.44, 31,074.52 and 13,086.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,518.44 : 31,074.52 = 13,086.28 : x
2. Step 2: Convert to fraction form
   22,518.44/31,074.52 = 13,086.28/x
3. Step 3: Cross multiply
   22,518.44x = 31,074.52 × 13,086.28
4. Step 4: Simplify right side
   22,518.44x = 406,649,869.59
5. Step 5: Solve for x
   x = 406,649,869.59/22,518.44
6. Step 6: Final answer
   x = 18,058.53