Finding the Fourth Proportional to 10,445.91, 15,669.48 and 4,205.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,445.91 : 15,669.48 = 4,205.89 : x
2. Step 2: Convert to fraction form
   10,445.91/15,669.48 = 4,205.89/x
3. Step 3: Cross multiply
   10,445.91x = 15,669.48 × 4,205.89
4. Step 4: Simplify right side
   10,445.91x = 65,904,144.60
5. Step 5: Solve for x
   x = 65,904,144.60/10,445.91
6. Step 6: Final answer
   x = 6,309.09