Finding the Fourth Proportional to 11,400.50, 17,100.59 and 3,609.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,400.50 : 17,100.59 = 3,609.31 : x
2. Step 2: Convert to fraction form
   11,400.50/17,100.59 = 3,609.31/x
3. Step 3: Cross multiply
   11,400.50x = 17,100.59 × 3,609.31
4. Step 4: Simplify right side
   11,400.50x = 61,721,296.76
5. Step 5: Solve for x
   x = 61,721,296.76/11,400.50
6. Step 6: Final answer
   x = 5,413.91