Finding the Fourth Proportional to 10,987.34, 16,480.86 and 2,667.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.34 : 16,480.86 = 2,667.44 : x
2. Step 2: Convert to fraction form
   10,987.34/16,480.86 = 2,667.44/x
3. Step 3: Cross multiply
   10,987.34x = 16,480.86 × 2,667.44
4. Step 4: Simplify right side
   10,987.34x = 43,961,622.79
5. Step 5: Solve for x
   x = 43,961,622.79/10,987.34
6. Step 6: Final answer
   x = 4,001.12