Finding the Fourth Proportional to 33,189.12, 49,782.06 and 12,411

Step by Step Solution

1. Step 1: Write the proportion equation
   33,189.12 : 49,782.06 = 12,411 : x
2. Step 2: Convert to fraction form
   33,189.12/49,782.06 = 12,411/x
3. Step 3: Cross multiply
   33,189.12x = 49,782.06 × 12,411
4. Step 4: Simplify right side
   33,189.12x = 617,845,146.66
5. Step 5: Solve for x
   x = 617,845,146.66/33,189.12
6. Step 6: Final answer
   x = 18,615.89