Finding the Fourth Proportional to 32,780.89, 45,235.22 and 18,631

Step by Step Solution

1. Step 1: Write the proportion equation
   32,780.89 : 45,235.22 = 18,631 : x
2. Step 2: Convert to fraction form
   32,780.89/45,235.22 = 18,631/x
3. Step 3: Cross multiply
   32,780.89x = 45,235.22 × 18,631
4. Step 4: Simplify right side
   32,780.89x = 842,777,383.82
5. Step 5: Solve for x
   x = 842,777,383.82/32,780.89
6. Step 6: Final answer
   x = 25,709.41