Finding the Fourth Proportional to 3,675.63, 5,072.49 and 2,103.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,675.63 : 5,072.49 = 2,103.72 : x
2. Step 2: Convert to fraction form
   3,675.63/5,072.49 = 2,103.72/x
3. Step 3: Cross multiply
   3,675.63x = 5,072.49 × 2,103.72
4. Step 4: Simplify right side
   3,675.63x = 10,671,098.66
5. Step 5: Solve for x
   x = 10,671,098.66/3,675.63
6. Step 6: Final answer
   x = 2,903.20