Finding the Fourth Proportional to 10,997.12, 16,498.49 and 3,205.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,997.12 : 16,498.49 = 3,205.91 : x
2. Step 2: Convert to fraction form
   10,997.12/16,498.49 = 3,205.91/x
3. Step 3: Cross multiply
   10,997.12x = 16,498.49 × 3,205.91
4. Step 4: Simplify right side
   10,997.12x = 52,892,575.55
5. Step 5: Solve for x
   x = 52,892,575.55/10,997.12
6. Step 6: Final answer
   x = 4,809.68