Finding the Fourth Proportional to 30,938.30, 42,694.83 and 17,509.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,938.30 : 42,694.83 = 17,509.31 : x
2. Step 2: Convert to fraction form
   30,938.30/42,694.83 = 17,509.31/x
3. Step 3: Cross multiply
   30,938.30x = 42,694.83 × 17,509.31
4. Step 4: Simplify right side
   30,938.30x = 747,557,120.60
5. Step 5: Solve for x
   x = 747,557,120.60/30,938.30
6. Step 6: Final answer
   x = 24,162.84