Finding the Fourth Proportional to 30,998.72, 42,775.36 and 17,571.15

Step by Step Solution

1. Step 1: Write the proportion equation
   30,998.72 : 42,775.36 = 17,571.15 : x
2. Step 2: Convert to fraction form
   30,998.72/42,775.36 = 17,571.15/x
3. Step 3: Cross multiply
   30,998.72x = 42,775.36 × 17,571.15
4. Step 4: Simplify right side
   30,998.72x = 751,612,222.94
5. Step 5: Solve for x
   x = 751,612,222.94/30,998.72
6. Step 6: Final answer
   x = 24,246.55