Finding the Fourth Proportional to 10,911.08, 16,354.06 and 4,667.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,911.08 : 16,354.06 = 4,667.20 : x
2. Step 2: Convert to fraction form
   10,911.08/16,354.06 = 4,667.20/x
3. Step 3: Cross multiply
   10,911.08x = 16,354.06 × 4,667.20
4. Step 4: Simplify right side
   10,911.08x = 76,327,668.83
5. Step 5: Solve for x
   x = 76,327,668.83/10,911.08
6. Step 6: Final answer
   x = 6,995.43