Finding the Fourth Proportional to 30,862.78, 42,590.55 and 17,433.37

Step by Step Solution

1. Step 1: Write the proportion equation
   30,862.78 : 42,590.55 = 17,433.37 : x
2. Step 2: Convert to fraction form
   30,862.78/42,590.55 = 17,433.37/x
3. Step 3: Cross multiply
   30,862.78x = 42,590.55 × 17,433.37
4. Step 4: Simplify right side
   30,862.78x = 742,496,816.65
5. Step 5: Solve for x
   x = 742,496,816.65/30,862.78
6. Step 6: Final answer
   x = 24,058.00