Finding the Fourth Proportional to 37,150.86, 55,728.18 and 10,857.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,150.86 : 55,728.18 = 10,857.72 : x
2. Step 2: Convert to fraction form
   37,150.86/55,728.18 = 10,857.72/x
3. Step 3: Cross multiply
   37,150.86x = 55,728.18 × 10,857.72
4. Step 4: Simplify right side
   37,150.86x = 605,080,974.55
5. Step 5: Solve for x
   x = 605,080,974.55/37,150.86
6. Step 6: Final answer
   x = 16,287.13