Finding the Fourth Proportional to 33,003.47, 45,540.43 and 18,665.25

Step by Step Solution

1. Step 1: Write the proportion equation
   33,003.47 : 45,540.43 = 18,665.25 : x
2. Step 2: Convert to fraction form
   33,003.47/45,540.43 = 18,665.25/x
3. Step 3: Cross multiply
   33,003.47x = 45,540.43 × 18,665.25
4. Step 4: Simplify right side
   33,003.47x = 850,023,511.06
5. Step 5: Solve for x
   x = 850,023,511.06/33,003.47
6. Step 6: Final answer
   x = 25,755.58