Finding the Fourth Proportional to 31,665.72, 43,699.98 and 17,518.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,665.72 : 43,699.98 = 17,518.32 : x
2. Step 2: Convert to fraction form
   31,665.72/43,699.98 = 17,518.32/x
3. Step 3: Cross multiply
   31,665.72x = 43,699.98 × 17,518.32
4. Step 4: Simplify right side
   31,665.72x = 765,550,233.63
5. Step 5: Solve for x
   x = 765,550,233.63/31,665.72
6. Step 6: Final answer
   x = 24,175.99