Finding the Fourth Proportional to 11,719.16, 16,172.71 and 6,413.99

Step by Step Solution

1. Step 1: Write the proportion equation
   11,719.16 : 16,172.71 = 6,413.99 : x
2. Step 2: Convert to fraction form
   11,719.16/16,172.71 = 6,413.99/x
3. Step 3: Cross multiply
   11,719.16x = 16,172.71 × 6,413.99
4. Step 4: Simplify right side
   11,719.16x = 103,731,675.85
5. Step 5: Solve for x
   x = 103,731,675.85/11,719.16
6. Step 6: Final answer
   x = 8,851.46