Finding the Fourth Proportional to 33,256.86, 49,870.62 and 12,465.78

Step by Step Solution

1. Step 1: Write the proportion equation
   33,256.86 : 49,870.62 = 12,465.78 : x
2. Step 2: Convert to fraction form
   33,256.86/49,870.62 = 12,465.78/x
3. Step 3: Cross multiply
   33,256.86x = 49,870.62 × 12,465.78
4. Step 4: Simplify right side
   33,256.86x = 621,676,177.38
5. Step 5: Solve for x
   x = 621,676,177.38/33,256.86
6. Step 6: Final answer
   x = 18,693.17