Finding the Fourth Proportional to 30,788.48, 42,488.09 and 16,641.33

Step by Step Solution

1. Step 1: Write the proportion equation
   30,788.48 : 42,488.09 = 16,641.33 : x
2. Step 2: Convert to fraction form
   30,788.48/42,488.09 = 16,641.33/x
3. Step 3: Cross multiply
   30,788.48x = 42,488.09 × 16,641.33
4. Step 4: Simplify right side
   30,788.48x = 707,058,146.63
5. Step 5: Solve for x
   x = 707,058,146.63/30,788.48
6. Step 6: Final answer
   x = 22,965.02