Finding the Fourth Proportional to 31,677.34, 43,724.46 and 18,257.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,677.34 : 43,724.46 = 18,257.53 : x
2. Step 2: Convert to fraction form
   31,677.34/43,724.46 = 18,257.53/x
3. Step 3: Cross multiply
   31,677.34x = 43,724.46 × 18,257.53
4. Step 4: Simplify right side
   31,677.34x = 798,300,455.65
5. Step 5: Solve for x
   x = 798,300,455.65/31,677.34
6. Step 6: Final answer
   x = 25,200.99