Finding the Fourth Proportional to 31,638.72, 43,659.81 and 17,488.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,638.72 : 43,659.81 = 17,488.83 : x
2. Step 2: Convert to fraction form
   31,638.72/43,659.81 = 17,488.83/x
3. Step 3: Cross multiply
   31,638.72x = 43,659.81 × 17,488.83
4. Step 4: Simplify right side
   31,638.72x = 763,558,994.92
5. Step 5: Solve for x
   x = 763,558,994.92/31,638.72
6. Step 6: Final answer
   x = 24,133.69