Finding the Fourth Proportional to 30,968.05, 42,638.79 and 27,330.34

Step by Step Solution

1. Step 1: Write the proportion equation
   30,968.05 : 42,638.79 = 27,330.34 : x
2. Step 2: Convert to fraction form
   30,968.05/42,638.79 = 27,330.34/x
3. Step 3: Cross multiply
   30,968.05x = 42,638.79 × 27,330.34
4. Step 4: Simplify right side
   30,968.05x = 1,165,332,627.89
5. Step 5: Solve for x
   x = 1,165,332,627.89/30,968.05
6. Step 6: Final answer
   x = 37,630.16