Finding the Fourth Proportional to 5,698.81, 7,864.33 and 3,180.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,698.81 : 7,864.33 = 3,180.89 : x
2. Step 2: Convert to fraction form
   5,698.81/7,864.33 = 3,180.89/x
3. Step 3: Cross multiply
   5,698.81x = 7,864.33 × 3,180.89
4. Step 4: Simplify right side
   5,698.81x = 25,015,513.43
5. Step 5: Solve for x
   x = 25,015,513.43/5,698.81
6. Step 6: Final answer
   x = 4,389.61