Finding the Fourth Proportional to 28,456.08, 42,650.82 and 21,413.49

Step by Step Solution

1. Step 1: Write the proportion equation
   28,456.08 : 42,650.82 = 21,413.49 : x
2. Step 2: Convert to fraction form
   28,456.08/42,650.82 = 21,413.49/x
3. Step 3: Cross multiply
   28,456.08x = 42,650.82 × 21,413.49
4. Step 4: Simplify right side
   28,456.08x = 913,302,907.56
5. Step 5: Solve for x
   x = 913,302,907.56/28,456.08
6. Step 6: Final answer
   x = 32,095.18