Finding the Fourth Proportional to 33,275.86, 49,913.58 and 8,315.78

Step by Step Solution

1. Step 1: Write the proportion equation
   33,275.86 : 49,913.58 = 8,315.78 : x
2. Step 2: Convert to fraction form
   33,275.86/49,913.58 = 8,315.78/x
3. Step 3: Cross multiply
   33,275.86x = 49,913.58 × 8,315.78
4. Step 4: Simplify right side
   33,275.86x = 415,070,100.72
5. Step 5: Solve for x
   x = 415,070,100.72/33,275.86
6. Step 6: Final answer
   x = 12,473.61