Finding the Fourth Proportional to 5,784.18, 7,982.16 and 3,131.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,784.18 : 7,982.16 = 3,131.58 : x
2. Step 2: Convert to fraction form
   5,784.18/7,982.16 = 3,131.58/x
3. Step 3: Cross multiply
   5,784.18x = 7,982.16 × 3,131.58
4. Step 4: Simplify right side
   5,784.18x = 24,996,772.61
5. Step 5: Solve for x
   x = 24,996,772.61/5,784.18
6. Step 6: Final answer
   x = 4,321.58