Finding the Fourth Proportional to 3,616.30, 4,991.39 and 2,124.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,616.30 : 4,991.39 = 2,124.69 : x
2. Step 2: Convert to fraction form
   3,616.30/4,991.39 = 2,124.69/x
3. Step 3: Cross multiply
   3,616.30x = 4,991.39 × 2,124.69
4. Step 4: Simplify right side
   3,616.30x = 10,605,156.42
5. Step 5: Solve for x
   x = 10,605,156.42/3,616.30
6. Step 6: Final answer
   x = 2,932.60