Finding the Fourth Proportional to 8,413.81, 12,606.76 and 5,116.93

Step by Step Solution

1. Step 1: Write the proportion equation
   8,413.81 : 12,606.76 = 5,116.93 : x
2. Step 2: Convert to fraction form
   8,413.81/12,606.76 = 5,116.93/x
3. Step 3: Cross multiply
   8,413.81x = 12,606.76 × 5,116.93
4. Step 4: Simplify right side
   8,413.81x = 64,507,883.33
5. Step 5: Solve for x
   x = 64,507,883.33/8,413.81
6. Step 6: Final answer
   x = 7,666.91