Finding the Fourth Proportional to 31,662.72, 43,695.84 and 17,515.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,662.72 : 43,695.84 = 17,515.32 : x
2. Step 2: Convert to fraction form
   31,662.72/43,695.84 = 17,515.32/x
3. Step 3: Cross multiply
   31,662.72x = 43,695.84 × 17,515.32
4. Step 4: Simplify right side
   31,662.72x = 765,346,620.27
5. Step 5: Solve for x
   x = 765,346,620.27/31,662.72
6. Step 6: Final answer
   x = 24,171.85