Finding the Fourth Proportional to 22,789.50, 31,450.74 and 13,361.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,789.50 : 31,450.74 = 13,361.10 : x
2. Step 2: Convert to fraction form
   22,789.50/31,450.74 = 13,361.10/x
3. Step 3: Cross multiply
   22,789.50x = 31,450.74 × 13,361.10
4. Step 4: Simplify right side
   22,789.50x = 420,216,482.21
5. Step 5: Solve for x
   x = 420,216,482.21/22,789.50
6. Step 6: Final answer
   x = 18,439.04