Finding the Fourth Proportional to 9,285.36, 12,815.56 and 5,510.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,285.36 : 12,815.56 = 5,510.62 : x
2. Step 2: Convert to fraction form
   9,285.36/12,815.56 = 5,510.62/x
3. Step 3: Cross multiply
   9,285.36x = 12,815.56 × 5,510.62
4. Step 4: Simplify right side
   9,285.36x = 70,621,681.25
5. Step 5: Solve for x
   x = 70,621,681.25/9,285.36
6. Step 6: Final answer
   x = 7,605.70