Finding the Fourth Proportional to 12,384.60, 18,565.61 and 4,485.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384.60 : 18,565.61 = 4,485.27 : x
2. Step 2: Convert to fraction form
   12,384.60/18,565.61 = 4,485.27/x
3. Step 3: Cross multiply
   12,384.60x = 18,565.61 × 4,485.27
4. Step 4: Simplify right side
   12,384.60x = 83,271,820.76
5. Step 5: Solve for x
   x = 83,271,820.76/12,384.60
6. Step 6: Final answer
   x = 6,723.82