Finding the Fourth Proportional to 33,091.88, 49,645.17 and 12,315.38

Step by Step Solution

1. Step 1: Write the proportion equation
   33,091.88 : 49,645.17 = 12,315.38 : x
2. Step 2: Convert to fraction form
   33,091.88/49,645.17 = 12,315.38/x
3. Step 3: Cross multiply
   33,091.88x = 49,645.17 × 12,315.38
4. Step 4: Simplify right side
   33,091.88x = 611,398,885.49
5. Step 5: Solve for x
   x = 611,398,885.49/33,091.88
6. Step 6: Final answer
   x = 18,475.80