Finding the Fourth Proportional to 14,413.50, 19,890.63 and 7,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,413.50 : 19,890.63 = 7,789.50 : x
2. Step 2: Convert to fraction form
   14,413.50/19,890.63 = 7,789.50/x
3. Step 3: Cross multiply
   14,413.50x = 19,890.63 × 7,789.50
4. Step 4: Simplify right side
   14,413.50x = 154,938,062.39
5. Step 5: Solve for x
   x = 154,938,062.39/14,413.50
6. Step 6: Final answer
   x = 10,749.51