Finding the Fourth Proportional to 30,865.34, 42,593.55 and 17,253.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,865.34 : 42,593.55 = 17,253.31 : x
2. Step 2: Convert to fraction form
   30,865.34/42,593.55 = 17,253.31/x
3. Step 3: Cross multiply
   30,865.34x = 42,593.55 × 17,253.31
4. Step 4: Simplify right side
   30,865.34x = 734,879,679.02
5. Step 5: Solve for x
   x = 734,879,679.02/30,865.34
6. Step 6: Final answer
   x = 23,809.22