Finding the Fourth Proportional to 3,672.42, 5,066.79 and 2,100.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,672.42 : 5,066.79 = 2,100.21 : x
2. Step 2: Convert to fraction form
   3,672.42/5,066.79 = 2,100.21/x
3. Step 3: Cross multiply
   3,672.42x = 5,066.79 × 2,100.21
4. Step 4: Simplify right side
   3,672.42x = 10,641,323.03
5. Step 5: Solve for x
   x = 10,641,323.03/3,672.42
6. Step 6: Final answer
   x = 2,897.63