Finding the Fourth Proportional to 12,205.89, 18,310.96 and 5,970.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,205.89 : 18,310.96 = 5,970.21 : x
2. Step 2: Convert to fraction form
   12,205.89/18,310.96 = 5,970.21/x
3. Step 3: Cross multiply
   12,205.89x = 18,310.96 × 5,970.21
4. Step 4: Simplify right side
   12,205.89x = 109,320,215.30
5. Step 5: Solve for x
   x = 109,320,215.30/12,205.89
6. Step 6: Final answer
   x = 8,956.35