Finding the Fourth Proportional to 9,308.12, 12,849.54 and 7,052.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,308.12 : 12,849.54 = 7,052.20 : x
2. Step 2: Convert to fraction form
   9,308.12/12,849.54 = 7,052.20/x
3. Step 3: Cross multiply
   9,308.12x = 12,849.54 × 7,052.20
4. Step 4: Simplify right side
   9,308.12x = 90,617,525.99
5. Step 5: Solve for x
   x = 90,617,525.99/9,308.12
6. Step 6: Final answer
   x = 9,735.32