Finding the Fourth Proportional to 10,978, 16,467.04 and 2,658

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978 : 16,467.04 = 2,658 : x
2. Step 2: Convert to fraction form
   10,978/16,467.04 = 2,658/x
3. Step 3: Cross multiply
   10,978x = 16,467.04 × 2,658
4. Step 4: Simplify right side
   10,978x = 43,769,392.32
5. Step 5: Solve for x
   x = 43,769,392.32/10,978
6. Step 6: Final answer
   x = 3,987.01