Finding the Fourth Proportional to 4,245.80, 5,859.69 and 4,109.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,245.80 : 5,859.69 = 4,109.72 : x
2. Step 2: Convert to fraction form
   4,245.80/5,859.69 = 4,109.72/x
3. Step 3: Cross multiply
   4,245.80x = 5,859.69 × 4,109.72
4. Step 4: Simplify right side
   4,245.80x = 24,081,685.19
5. Step 5: Solve for x
   x = 24,081,685.19/4,245.80
6. Step 6: Final answer
   x = 5,671.88