Finding the Fourth Proportional to 37,857.79, 52,243.04 and 20,863.61

Step by Step Solution

1. Step 1: Write the proportion equation
   37,857.79 : 52,243.04 = 20,863.61 : x
2. Step 2: Convert to fraction form
   37,857.79/52,243.04 = 20,863.61/x
3. Step 3: Cross multiply
   37,857.79x = 52,243.04 × 20,863.61
4. Step 4: Simplify right side
   37,857.79x = 1,089,978,202.72
5. Step 5: Solve for x
   x = 1,089,978,202.72/37,857.79
6. Step 6: Final answer
   x = 28,791.39