Finding the Fourth Proportional to 5,109.89, 7,661.54 and 2,150.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,109.89 : 7,661.54 = 2,150.25 : x
2. Step 2: Convert to fraction form
   5,109.89/7,661.54 = 2,150.25/x
3. Step 3: Cross multiply
   5,109.89x = 7,661.54 × 2,150.25
4. Step 4: Simplify right side
   5,109.89x = 16,474,190.93
5. Step 5: Solve for x
   x = 16,474,190.93/5,109.89
6. Step 6: Final answer
   x = 3,223.98