Finding the Fourth Proportional to 33,142.50, 45,736.74 and 18,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,142.50 : 45,736.74 = 18,238.50 : x
2. Step 2: Convert to fraction form
   33,142.50/45,736.74 = 18,238.50/x
3. Step 3: Cross multiply
   33,142.50x = 45,736.74 × 18,238.50
4. Step 4: Simplify right side
   33,142.50x = 834,169,532.49
5. Step 5: Solve for x
   x = 834,169,532.49/33,142.50
6. Step 6: Final answer
   x = 25,169.18