Finding the Fourth Proportional to 30,768.05, 42,460.20 and 17,338.05

Step by Step Solution

1. Step 1: Write the proportion equation
   30,768.05 : 42,460.20 = 17,338.05 : x
2. Step 2: Convert to fraction form
   30,768.05/42,460.20 = 17,338.05/x
3. Step 3: Cross multiply
   30,768.05x = 42,460.20 × 17,338.05
4. Step 4: Simplify right side
   30,768.05x = 736,177,070.61
5. Step 5: Solve for x
   x = 736,177,070.61/30,768.05
6. Step 6: Final answer
   x = 23,926.67