Finding the Fourth Proportional to 22,441.39, 30,969.12 and 13,015.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,441.39 : 30,969.12 = 13,015.42 : x
2. Step 2: Convert to fraction form
   22,441.39/30,969.12 = 13,015.42/x
3. Step 3: Cross multiply
   22,441.39x = 30,969.12 × 13,015.42
4. Step 4: Simplify right side
   22,441.39x = 403,076,103.83
5. Step 5: Solve for x
   x = 403,076,103.83/22,441.39
6. Step 6: Final answer
   x = 17,961.28