Finding the Fourth Proportional to 12,087.48, 16,667.21 and 7,605.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,087.48 : 16,667.21 = 7,605.75 : x
2. Step 2: Convert to fraction form
   12,087.48/16,667.21 = 7,605.75/x
3. Step 3: Cross multiply
   12,087.48x = 16,667.21 × 7,605.75
4. Step 4: Simplify right side
   12,087.48x = 126,766,594.43
5. Step 5: Solve for x
   x = 126,766,594.43/12,087.48
6. Step 6: Final answer
   x = 10,487.43