Finding the Fourth Proportional to 30,786.27, 42,484.50 and 17,357.55

Step by Step Solution

1. Step 1: Write the proportion equation
   30,786.27 : 42,484.50 = 17,357.55 : x
2. Step 2: Convert to fraction form
   30,786.27/42,484.50 = 17,357.55/x
3. Step 3: Cross multiply
   30,786.27x = 42,484.50 × 17,357.55
4. Step 4: Simplify right side
   30,786.27x = 737,426,832.98
5. Step 5: Solve for x
   x = 737,426,832.98/30,786.27
6. Step 6: Final answer
   x = 23,953.11