Finding the Fourth Proportional to 10,690.94, 14,757.61 and 9,569.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,690.94 : 14,757.61 = 9,569.90 : x
2. Step 2: Convert to fraction form
   10,690.94/14,757.61 = 9,569.90/x
3. Step 3: Cross multiply
   10,690.94x = 14,757.61 × 9,569.90
4. Step 4: Simplify right side
   10,690.94x = 141,228,778.15
5. Step 5: Solve for x
   x = 141,228,778.15/10,690.94
6. Step 6: Final answer
   x = 13,210.14