Finding the Fourth Proportional to 31,665.51, 43,698.15 and 17,519.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,665.51 : 43,698.15 = 17,519.13 : x
2. Step 2: Convert to fraction form
   31,665.51/43,698.15 = 17,519.13/x
3. Step 3: Cross multiply
   31,665.51x = 43,698.15 × 17,519.13
4. Step 4: Simplify right side
   31,665.51x = 765,553,570.61
5. Step 5: Solve for x
   x = 765,553,570.61/31,665.51
6. Step 6: Final answer
   x = 24,176.26