Finding the Fourth Proportional to 8,499.48, 11,729.34 and 4,722.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.48 : 11,729.34 = 4,722.90 : x
2. Step 2: Convert to fraction form
   8,499.48/11,729.34 = 4,722.90/x
3. Step 3: Cross multiply
   8,499.48x = 11,729.34 × 4,722.90
4. Step 4: Simplify right side
   8,499.48x = 55,396,499.89
5. Step 5: Solve for x
   x = 55,396,499.89/8,499.48
6. Step 6: Final answer
   x = 6,517.63