Finding the Fourth Proportional to 3,675.15, 5,071.59 and 2,103.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,675.15 : 5,071.59 = 2,103.21 : x
2. Step 2: Convert to fraction form
   3,675.15/5,071.59 = 2,103.21/x
3. Step 3: Cross multiply
   3,675.15x = 5,071.59 × 2,103.21
4. Step 4: Simplify right side
   3,675.15x = 10,666,618.80
5. Step 5: Solve for x
   x = 10,666,618.80/3,675.15
6. Step 6: Final answer
   x = 2,902.36