Finding the Fourth Proportional to 31,867.85, 43,978.70 and 17,528.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,867.85 : 43,978.70 = 17,528.28 : x
2. Step 2: Convert to fraction form
   31,867.85/43,978.70 = 17,528.28/x
3. Step 3: Cross multiply
   31,867.85x = 43,978.70 × 17,528.28
4. Step 4: Simplify right side
   31,867.85x = 770,870,989.94
5. Step 5: Solve for x
   x = 770,870,989.94/31,867.85
6. Step 6: Final answer
   x = 24,189.62