Finding the Fourth Proportional to 30,738.82, 42,420.33 and 17,310.55

Step by Step Solution

1. Step 1: Write the proportion equation
   30,738.82 : 42,420.33 = 17,310.55 : x
2. Step 2: Convert to fraction form
   30,738.82/42,420.33 = 17,310.55/x
3. Step 3: Cross multiply
   30,738.82x = 42,420.33 × 17,310.55
4. Step 4: Simplify right side
   30,738.82x = 734,319,243.48
5. Step 5: Solve for x
   x = 734,319,243.48/30,738.82
6. Step 6: Final answer
   x = 23,888.99