Finding the Fourth Proportional to 3,862.16, 5,798.69 and 3,685.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,862.16 : 5,798.69 = 3,685.98 : x
2. Step 2: Convert to fraction form
   3,862.16/5,798.69 = 3,685.98/x
3. Step 3: Cross multiply
   3,862.16x = 5,798.69 × 3,685.98
4. Step 4: Simplify right side
   3,862.16x = 21,373,855.37
5. Step 5: Solve for x
   x = 21,373,855.37/3,862.16
6. Step 6: Final answer
   x = 5,534.17