Finding the Fourth Proportional to 30,969.21, 42,738.52 and 17,540.16

Step by Step Solution

1. Step 1: Write the proportion equation
   30,969.21 : 42,738.52 = 17,540.16 : x
2. Step 2: Convert to fraction form
   30,969.21/42,738.52 = 17,540.16/x
3. Step 3: Cross multiply
   30,969.21x = 42,738.52 × 17,540.16
4. Step 4: Simplify right side
   30,969.21x = 749,640,478.96
5. Step 5: Solve for x
   x = 749,640,478.96/30,969.21
6. Step 6: Final answer
   x = 24,205.99