Finding the Fourth Proportional to 10,648.47, 14,690.57 and 7,065.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,648.47 : 14,690.57 = 7,065.12 : x
2. Step 2: Convert to fraction form
   10,648.47/14,690.57 = 7,065.12/x
3. Step 3: Cross multiply
   10,648.47x = 14,690.57 × 7,065.12
4. Step 4: Simplify right side
   10,648.47x = 103,790,604.59
5. Step 5: Solve for x
   x = 103,790,604.59/10,648.47
6. Step 6: Final answer
   x = 9,747.00