Finding the Fourth Proportional to 3,943.93, 5,911.91 and 2,558.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,943.93 : 5,911.91 = 2,558.15 : x
2. Step 2: Convert to fraction form
   3,943.93/5,911.91 = 2,558.15/x
3. Step 3: Cross multiply
   3,943.93x = 5,911.91 × 2,558.15
4. Step 4: Simplify right side
   3,943.93x = 15,123,510.22
5. Step 5: Solve for x
   x = 15,123,510.22/3,943.93
6. Step 6: Final answer
   x = 3,834.63