Finding the Fourth Proportional to 12,413.63, 17,111.09 and 9,756.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,413.63 : 17,111.09 = 9,756.47 : x
2. Step 2: Convert to fraction form
   12,413.63/17,111.09 = 9,756.47/x
3. Step 3: Cross multiply
   12,413.63x = 17,111.09 × 9,756.47
4. Step 4: Simplify right side
   12,413.63x = 166,943,787.47
5. Step 5: Solve for x
   x = 166,943,787.47/12,413.63
6. Step 6: Final answer
   x = 13,448.43