Finding the Fourth Proportional to 10,860.72, 14,980.06 and 9,967.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,860.72 : 14,980.06 = 9,967.34 : x
2. Step 2: Convert to fraction form
   10,860.72/14,980.06 = 9,967.34/x
3. Step 3: Cross multiply
   10,860.72x = 14,980.06 × 9,967.34
4. Step 4: Simplify right side
   10,860.72x = 149,311,351.24
5. Step 5: Solve for x
   x = 149,311,351.24/10,860.72
6. Step 6: Final answer
   x = 13,747.83