Finding the Fourth Proportional to 31,065.38, 42,884.81 and 18,314.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,065.38 : 42,884.81 = 18,314.56 : x
2. Step 2: Convert to fraction form
   31,065.38/42,884.81 = 18,314.56/x
3. Step 3: Cross multiply
   31,065.38x = 42,884.81 × 18,314.56
4. Step 4: Simplify right side
   31,065.38x = 785,416,425.83
5. Step 5: Solve for x
   x = 785,416,425.83/31,065.38
6. Step 6: Final answer
   x = 25,282.69