Finding the Fourth Proportional to 32,780.72, 45,231.54 and 18,632.72

Step by Step Solution

1. Step 1: Write the proportion equation
   32,780.72 : 45,231.54 = 18,632.72 : x
2. Step 2: Convert to fraction form
   32,780.72/45,231.54 = 18,632.72/x
3. Step 3: Cross multiply
   32,780.72x = 45,231.54 × 18,632.72
4. Step 4: Simplify right side
   32,780.72x = 842,786,619.99
5. Step 5: Solve for x
   x = 842,786,619.99/32,780.72
6. Step 6: Final answer
   x = 25,709.83