Finding the Fourth Proportional to 9,986.67, 13,777.16 and 5,792.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,986.67 : 13,777.16 = 5,792.49 : x
2. Step 2: Convert to fraction form
   9,986.67/13,777.16 = 5,792.49/x
3. Step 3: Cross multiply
   9,986.67x = 13,777.16 × 5,792.49
4. Step 4: Simplify right side
   9,986.67x = 79,804,032.57
5. Step 5: Solve for x
   x = 79,804,032.57/9,986.67
6. Step 6: Final answer
   x = 7,991.06