Finding the Fourth Proportional to 5,820.17, 8,022.51 and 3,931.16

Step by Step Solution

1. Step 1: Write the proportion equation
   5,820.17 : 8,022.51 = 3,931.16 : x
2. Step 2: Convert to fraction form
   5,820.17/8,022.51 = 3,931.16/x
3. Step 3: Cross multiply
   5,820.17x = 8,022.51 × 3,931.16
4. Step 4: Simplify right side
   5,820.17x = 31,537,770.41
5. Step 5: Solve for x
   x = 31,537,770.41/5,820.17
6. Step 6: Final answer
   x = 5,418.70