Finding the Fourth Proportional to 3,527.55, 4,868.43 and 2,111.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,527.55 : 4,868.43 = 2,111.21 : x
2. Step 2: Convert to fraction form
   3,527.55/4,868.43 = 2,111.21/x
3. Step 3: Cross multiply
   3,527.55x = 4,868.43 × 2,111.21
4. Step 4: Simplify right side
   3,527.55x = 10,278,264.10
5. Step 5: Solve for x
   x = 10,278,264.10/3,527.55
6. Step 6: Final answer
   x = 2,913.71