Finding the Fourth Proportional to 3,886.04, 5,819.75 and 3,419.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.04 : 5,819.75 = 3,419.08 : x
2. Step 2: Convert to fraction form
   3,886.04/5,819.75 = 3,419.08/x
3. Step 3: Cross multiply
   3,886.04x = 5,819.75 × 3,419.08
4. Step 4: Simplify right side
   3,886.04x = 19,898,144.64
5. Step 5: Solve for x
   x = 19,898,144.64/3,886.04
6. Step 6: Final answer
   x = 5,120.42