Finding the Fourth Proportional to 9,225.70, 12,730.98 and 5,687.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,225.70 : 12,730.98 = 5,687.62 : x
2. Step 2: Convert to fraction form
   9,225.70/12,730.98 = 5,687.62/x
3. Step 3: Cross multiply
   9,225.70x = 12,730.98 × 5,687.62
4. Step 4: Simplify right side
   9,225.70x = 72,408,976.47
5. Step 5: Solve for x
   x = 72,408,976.47/9,225.70
6. Step 6: Final answer
   x = 7,848.62