Finding the Fourth Proportional to 31,681.37, 43,715.42 and 18,250

Step by Step Solution

1. Step 1: Write the proportion equation
   31,681.37 : 43,715.42 = 18,250 : x
2. Step 2: Convert to fraction form
   31,681.37/43,715.42 = 18,250/x
3. Step 3: Cross multiply
   31,681.37x = 43,715.42 × 18,250
4. Step 4: Simplify right side
   31,681.37x = 797,806,323.75
5. Step 5: Solve for x
   x = 797,806,323.75/31,681.37
6. Step 6: Final answer
   x = 25,182.19