Finding the Fourth Proportional to 30,990.18, 42,766.32 and 17,563.98

Step by Step Solution

1. Step 1: Write the proportion equation
   30,990.18 : 42,766.32 = 17,563.98 : x
2. Step 2: Convert to fraction form
   30,990.18/42,766.32 = 17,563.98/x
3. Step 3: Cross multiply
   30,990.18x = 42,766.32 × 17,563.98
4. Step 4: Simplify right side
   30,990.18x = 751,146,789.15
5. Step 5: Solve for x
   x = 751,146,789.15/30,990.18
6. Step 6: Final answer
   x = 24,238.22