Finding the Fourth Proportional to 7,309.48, 10,019.42 and 7,211.02

Step by Step Solution

1. Step 1: Write the proportion equation
   7,309.48 : 10,019.42 = 7,211.02 : x
2. Step 2: Convert to fraction form
   7,309.48/10,019.42 = 7,211.02/x
3. Step 3: Cross multiply
   7,309.48x = 10,019.42 × 7,211.02
4. Step 4: Simplify right side
   7,309.48x = 72,250,238.01
5. Step 5: Solve for x
   x = 72,250,238.01/7,309.48
6. Step 6: Final answer
   x = 9,884.46