Finding the Fourth Proportional to 33,137.72, 45,731.10 and 18,995

Step by Step Solution

1. Step 1: Write the proportion equation
   33,137.72 : 45,731.10 = 18,995 : x
2. Step 2: Convert to fraction form
   33,137.72/45,731.10 = 18,995/x
3. Step 3: Cross multiply
   33,137.72x = 45,731.10 × 18,995
4. Step 4: Simplify right side
   33,137.72x = 868,662,244.50
5. Step 5: Solve for x
   x = 868,662,244.50/33,137.72
6. Step 6: Final answer
   x = 26,213.70