Finding the Fourth Proportional to 31,816.50, 43,906.77 and 18,568.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,816.50 : 43,906.77 = 18,568.50 : x
2. Step 2: Convert to fraction form
   31,816.50/43,906.77 = 18,568.50/x
3. Step 3: Cross multiply
   31,816.50x = 43,906.77 × 18,568.50
4. Step 4: Simplify right side
   31,816.50x = 815,282,858.75
5. Step 5: Solve for x
   x = 815,282,858.75/31,816.50
6. Step 6: Final answer
   x = 25,624.53