Finding the Fourth Proportional to 14,928.72, 20,600.88 and 8,959.20

Step by Step Solution

1. Step 1: Write the proportion equation
   14,928.72 : 20,600.88 = 8,959.20 : x
2. Step 2: Convert to fraction form
   14,928.72/20,600.88 = 8,959.20/x
3. Step 3: Cross multiply
   14,928.72x = 20,600.88 × 8,959.20
4. Step 4: Simplify right side
   14,928.72x = 184,567,404.10
5. Step 5: Solve for x
   x = 184,567,404.10/14,928.72
6. Step 6: Final answer
   x = 12,363.24