Finding the Fourth Proportional to 7,657.52, 10,559.59 and 7,211.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,657.52 : 10,559.59 = 7,211.05 : x
2. Step 2: Convert to fraction form
   7,657.52/10,559.59 = 7,211.05/x
3. Step 3: Cross multiply
   7,657.52x = 10,559.59 × 7,211.05
4. Step 4: Simplify right side
   7,657.52x = 76,145,687.04
5. Step 5: Solve for x
   x = 76,145,687.04/7,657.52
6. Step 6: Final answer
   x = 9,943.92