Finding the Fourth Proportional to 12,762.81, 17,621.69 and 9,583.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,762.81 : 17,621.69 = 9,583.16 : x
2. Step 2: Convert to fraction form
   12,762.81/17,621.69 = 9,583.16/x
3. Step 3: Cross multiply
   12,762.81x = 17,621.69 × 9,583.16
4. Step 4: Simplify right side
   12,762.81x = 168,871,338.72
5. Step 5: Solve for x
   x = 168,871,338.72/12,762.81
6. Step 6: Final answer
   x = 13,231.52