Finding the Fourth Proportional to 33,185.48, 49,782.90 and 12,407

Step by Step Solution

1. Step 1: Write the proportion equation
   33,185.48 : 49,782.90 = 12,407 : x
2. Step 2: Convert to fraction form
   33,185.48/49,782.90 = 12,407/x
3. Step 3: Cross multiply
   33,185.48x = 49,782.90 × 12,407
4. Step 4: Simplify right side
   33,185.48x = 617,656,440.30
5. Step 5: Solve for x
   x = 617,656,440.30/33,185.48
6. Step 6: Final answer
   x = 18,612.25