Finding the Fourth Proportional to 8,965.42, 13,442.83 and 3,419.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,965.42 : 13,442.83 = 3,419.15 : x
2. Step 2: Convert to fraction form
   8,965.42/13,442.83 = 3,419.15/x
3. Step 3: Cross multiply
   8,965.42x = 13,442.83 × 3,419.15
4. Step 4: Simplify right side
   8,965.42x = 45,962,976.43
5. Step 5: Solve for x
   x = 45,962,976.43/8,965.42
6. Step 6: Final answer
   x = 5,126.70