Finding the Fourth Proportional to 30,786.30, 42,487.29 and 17,358.81

Step by Step Solution

1. Step 1: Write the proportion equation
   30,786.30 : 42,487.29 = 17,358.81 : x
2. Step 2: Convert to fraction form
   30,786.30/42,487.29 = 17,358.81/x
3. Step 3: Cross multiply
   30,786.30x = 42,487.29 × 17,358.81
4. Step 4: Simplify right side
   30,786.30x = 737,528,794.52
5. Step 5: Solve for x
   x = 737,528,794.52/30,786.30
6. Step 6: Final answer
   x = 23,956.40