Finding the Fourth Proportional to 9,065.40, 12,512.42 and 5,530.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,065.40 : 12,512.42 = 5,530.52 : x
2. Step 2: Convert to fraction form
   9,065.40/12,512.42 = 5,530.52/x
3. Step 3: Cross multiply
   9,065.40x = 12,512.42 × 5,530.52
4. Step 4: Simplify right side
   9,065.40x = 69,200,189.06
5. Step 5: Solve for x
   x = 69,200,189.06/9,065.40
6. Step 6: Final answer
   x = 7,633.44