Finding the Fourth Proportional to 3,675.12, 5,071.77 and 2,103.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,675.12 : 5,071.77 = 2,103.72 : x
2. Step 2: Convert to fraction form
   3,675.12/5,071.77 = 2,103.72/x
3. Step 3: Cross multiply
   3,675.12x = 5,071.77 × 2,103.72
4. Step 4: Simplify right side
   3,675.12x = 10,669,588.77
5. Step 5: Solve for x
   x = 10,669,588.77/3,675.12
6. Step 6: Final answer
   x = 2,903.19