Finding the Fourth Proportional to 31,392.72, 43,325 and 17,965.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,392.72 : 43,325 = 17,965.89 : x
2. Step 2: Convert to fraction form
   31,392.72/43,325 = 17,965.89/x
3. Step 3: Cross multiply
   31,392.72x = 43,325 × 17,965.89
4. Step 4: Simplify right side
   31,392.72x = 778,372,184.25
5. Step 5: Solve for x
   x = 778,372,184.25/31,392.72
6. Step 6: Final answer
   x = 24,794.67