Finding the Fourth Proportional to 30,388, 41,936.88 and 17,140

Step by Step Solution

1. Step 1: Write the proportion equation
   30,388 : 41,936.88 = 17,140 : x
2. Step 2: Convert to fraction form
   30,388/41,936.88 = 17,140/x
3. Step 3: Cross multiply
   30,388x = 41,936.88 × 17,140
4. Step 4: Simplify right side
   30,388x = 718,798,123.20
5. Step 5: Solve for x
   x = 718,798,123.20/30,388
6. Step 6: Final answer
   x = 23,654.01