Finding the Fourth Proportional to 5,784.57, 7,982.73 and 3,131.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,784.57 : 7,982.73 = 3,131.98 : x
2. Step 2: Convert to fraction form
   5,784.57/7,982.73 = 3,131.98/x
3. Step 3: Cross multiply
   5,784.57x = 7,982.73 × 3,131.98
4. Step 4: Simplify right side
   5,784.57x = 25,001,750.71
5. Step 5: Solve for x
   x = 25,001,750.71/5,784.57
6. Step 6: Final answer
   x = 4,322.15