Finding the Fourth Proportional to 30,796.62, 42,506.15 and 20,022.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,796.62 : 42,506.15 = 20,022.75 : x
2. Step 2: Convert to fraction form
   30,796.62/42,506.15 = 20,022.75/x
3. Step 3: Cross multiply
   30,796.62x = 42,506.15 × 20,022.75
4. Step 4: Simplify right side
   30,796.62x = 851,089,914.80
5. Step 5: Solve for x
   x = 851,089,914.80/30,796.62
6. Step 6: Final answer
   x = 27,635.82