Finding the Fourth Proportional to 12,271.86, 18,410.50 and 4,480.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,271.86 : 18,410.50 = 4,480.64 : x
2. Step 2: Convert to fraction form
   12,271.86/18,410.50 = 4,480.64/x
3. Step 3: Cross multiply
   12,271.86x = 18,410.50 × 4,480.64
4. Step 4: Simplify right side
   12,271.86x = 82,490,822.72
5. Step 5: Solve for x
   x = 82,490,822.72/12,271.86
6. Step 6: Final answer
   x = 6,721.95