Finding the Fourth Proportional to 49,151.86, 73,727.83 and 12,215.86

Step by Step Solution

1. Step 1: Write the proportion equation
   49,151.86 : 73,727.83 = 12,215.86 : x
2. Step 2: Convert to fraction form
   49,151.86/73,727.83 = 12,215.86/x
3. Step 3: Cross multiply
   49,151.86x = 73,727.83 × 12,215.86
4. Step 4: Simplify right side
   49,151.86x = 900,648,849.38
5. Step 5: Solve for x
   x = 900,648,849.38/49,151.86
6. Step 6: Final answer
   x = 18,323.80