Finding the Fourth Proportional to 33,136.72, 45,729.72 and 18,994

Step by Step Solution

1. Step 1: Write the proportion equation
   33,136.72 : 45,729.72 = 18,994 : x
2. Step 2: Convert to fraction form
   33,136.72/45,729.72 = 18,994/x
3. Step 3: Cross multiply
   33,136.72x = 45,729.72 × 18,994
4. Step 4: Simplify right side
   33,136.72x = 868,590,301.68
5. Step 5: Solve for x
   x = 868,590,301.68/33,136.72
6. Step 6: Final answer
   x = 26,212.32