Finding the Fourth Proportional to 9,228.70, 12,735.12 and 5,690.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,228.70 : 12,735.12 = 5,690.62 : x
2. Step 2: Convert to fraction form
   9,228.70/12,735.12 = 5,690.62/x
3. Step 3: Cross multiply
   9,228.70x = 12,735.12 × 5,690.62
4. Step 4: Simplify right side
   9,228.70x = 72,470,728.57
5. Step 5: Solve for x
   x = 72,470,728.57/9,228.70
6. Step 6: Final answer
   x = 7,852.76