Finding the Fourth Proportional to 30,725.33, 42,391.77 and 18,776.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,725.33 : 42,391.77 = 18,776.42 : x
2. Step 2: Convert to fraction form
   30,725.33/42,391.77 = 18,776.42/x
3. Step 3: Cross multiply
   30,725.33x = 42,391.77 × 18,776.42
4. Step 4: Simplify right side
   30,725.33x = 795,965,466.10
5. Step 5: Solve for x
   x = 795,965,466.10/30,725.33
6. Step 6: Final answer
   x = 25,905.84