Finding the Fourth Proportional to 8,728.18, 13,100.50 and 5,808.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,728.18 : 13,100.50 = 5,808.54 : x
2. Step 2: Convert to fraction form
   8,728.18/13,100.50 = 5,808.54/x
3. Step 3: Cross multiply
   8,728.18x = 13,100.50 × 5,808.54
4. Step 4: Simplify right side
   8,728.18x = 76,094,778.27
5. Step 5: Solve for x
   x = 76,094,778.27/8,728.18
6. Step 6: Final answer
   x = 8,718.29