Finding the Fourth Proportional to 30,913.55, 42,667.08 and 17,485.37

Step by Step Solution

1. Step 1: Write the proportion equation
   30,913.55 : 42,667.08 = 17,485.37 : x
2. Step 2: Convert to fraction form
   30,913.55/42,667.08 = 17,485.37/x
3. Step 3: Cross multiply
   30,913.55x = 42,667.08 × 17,485.37
4. Step 4: Simplify right side
   30,913.55x = 746,049,680.62
5. Step 5: Solve for x
   x = 746,049,680.62/30,913.55
6. Step 6: Final answer
   x = 24,133.42