Finding the Fourth Proportional to 3,943.17, 5,435.91 and 3,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,943.17 : 5,435.91 = 3,100.50 : x
2. Step 2: Convert to fraction form
   3,943.17/5,435.91 = 3,100.50/x
3. Step 3: Cross multiply
   3,943.17x = 5,435.91 × 3,100.50
4. Step 4: Simplify right side
   3,943.17x = 16,854,038.96
5. Step 5: Solve for x
   x = 16,854,038.96/3,943.17
6. Step 6: Final answer
   x = 4,274.24