Finding the Fourth Proportional to 30,967.82, 42,735.76 and 18,392.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,967.82 : 42,735.76 = 18,392.30 : x
2. Step 2: Convert to fraction form
   30,967.82/42,735.76 = 18,392.30/x
3. Step 3: Cross multiply
   30,967.82x = 42,735.76 × 18,392.30
4. Step 4: Simplify right side
   30,967.82x = 786,008,658.99
5. Step 5: Solve for x
   x = 786,008,658.99/30,967.82
6. Step 6: Final answer
   x = 25,381.47