Finding the Fourth Proportional to 6,104.30, 8,420.89 and 4,111.40

Step by Step Solution

1. Step 1: Write the proportion equation
   6,104.30 : 8,420.89 = 4,111.40 : x
2. Step 2: Convert to fraction form
   6,104.30/8,420.89 = 4,111.40/x
3. Step 3: Cross multiply
   6,104.30x = 8,420.89 × 4,111.40
4. Step 4: Simplify right side
   6,104.30x = 34,621,594.76
5. Step 5: Solve for x
   x = 34,621,594.76/6,104.30
6. Step 6: Final answer
   x = 5,671.67