Finding the Fourth Proportional to 3,359.72, 5,039.31 and 2,123.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,359.72 : 5,039.31 = 2,123.53 : x
2. Step 2: Convert to fraction form
   3,359.72/5,039.31 = 2,123.53/x
3. Step 3: Cross multiply
   3,359.72x = 5,039.31 × 2,123.53
4. Step 4: Simplify right side
   3,359.72x = 10,701,125.96
5. Step 5: Solve for x
   x = 10,701,125.96/3,359.72
6. Step 6: Final answer
   x = 3,185.12