Finding the Fourth Proportional to 30,913.29, 42,662.12 and 17,485.83

Step by Step Solution

1. Step 1: Write the proportion equation
   30,913.29 : 42,662.12 = 17,485.83 : x
2. Step 2: Convert to fraction form
   30,913.29/42,662.12 = 17,485.83/x
3. Step 3: Cross multiply
   30,913.29x = 42,662.12 × 17,485.83
4. Step 4: Simplify right side
   30,913.29x = 745,982,490.33
5. Step 5: Solve for x
   x = 745,982,490.33/30,913.29
6. Step 6: Final answer
   x = 24,131.45