Finding the Fourth Proportional to 31,558.32, 43,536.83 and 18,126.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,558.32 : 43,536.83 = 18,126.50 : x
2. Step 2: Convert to fraction form
   31,558.32/43,536.83 = 18,126.50/x
3. Step 3: Cross multiply
   31,558.32x = 43,536.83 × 18,126.50
4. Step 4: Simplify right side
   31,558.32x = 789,170,040.68
5. Step 5: Solve for x
   x = 789,170,040.68/31,558.32
6. Step 6: Final answer
   x = 25,006.72