Finding the Fourth Proportional to 30,792.09, 42,499.88 and 20,018.22

Step by Step Solution

1. Step 1: Write the proportion equation
   30,792.09 : 42,499.88 = 20,018.22 : x
2. Step 2: Convert to fraction form
   30,792.09/42,499.88 = 20,018.22/x
3. Step 3: Cross multiply
   30,792.09x = 42,499.88 × 20,018.22
4. Step 4: Simplify right side
   30,792.09x = 850,771,847.72
5. Step 5: Solve for x
   x = 850,771,847.72/30,792.09
6. Step 6: Final answer
   x = 27,629.56