Finding the Fourth Proportional to 20,047.12, 30,074.37 and 8,361.34

Step by Step Solution

1. Step 1: Write the proportion equation
   20,047.12 : 30,074.37 = 8,361.34 : x
2. Step 2: Convert to fraction form
   20,047.12/30,074.37 = 8,361.34/x
3. Step 3: Cross multiply
   20,047.12x = 30,074.37 × 8,361.34
4. Step 4: Simplify right side
   20,047.12x = 251,462,032.86
5. Step 5: Solve for x
   x = 251,462,032.86/20,047.12
6. Step 6: Final answer
   x = 12,543.55