Finding the Fourth Proportional to 9,116.72, 13,679.72 and 4,185.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,116.72 : 13,679.72 = 4,185.84 : x
2. Step 2: Convert to fraction form
   9,116.72/13,679.72 = 4,185.84/x
3. Step 3: Cross multiply
   9,116.72x = 13,679.72 × 4,185.84
4. Step 4: Simplify right side
   9,116.72x = 57,261,119.16
5. Step 5: Solve for x
   x = 57,261,119.16/9,116.72
6. Step 6: Final answer
   x = 6,280.89