Finding the Fourth Proportional to 10,987.17, 16,480.59 and 2,667.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.17 : 16,480.59 = 2,667.25 : x
2. Step 2: Convert to fraction form
   10,987.17/16,480.59 = 2,667.25/x
3. Step 3: Cross multiply
   10,987.17x = 16,480.59 × 2,667.25
4. Step 4: Simplify right side
   10,987.17x = 43,957,853.68
5. Step 5: Solve for x
   x = 43,957,853.68/10,987.17
6. Step 6: Final answer
   x = 4,000.84