Finding the Fourth Proportional to 33,328.72, 45,993 and 18,424.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,328.72 : 45,993 = 18,424.72 : x
2. Step 2: Convert to fraction form
   33,328.72/45,993 = 18,424.72/x
3. Step 3: Cross multiply
   33,328.72x = 45,993 × 18,424.72
4. Step 4: Simplify right side
   33,328.72x = 847,408,146.96
5. Step 5: Solve for x
   x = 847,408,146.96/33,328.72
6. Step 6: Final answer
   x = 25,425.76