Finding the Fourth Proportional to 8,431.33, 12,584.47 and 7,300.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,431.33 : 12,584.47 = 7,300.55 : x
2. Step 2: Convert to fraction form
   8,431.33/12,584.47 = 7,300.55/x
3. Step 3: Cross multiply
   8,431.33x = 12,584.47 × 7,300.55
4. Step 4: Simplify right side
   8,431.33x = 91,873,502.75
5. Step 5: Solve for x
   x = 91,873,502.75/8,431.33
6. Step 6: Final answer
   x = 10,896.68