Finding the Fourth Proportional to 6,111.09, 8,420.28 and 4,118.19

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.09 : 8,420.28 = 4,118.19 : x
2. Step 2: Convert to fraction form
   6,111.09/8,420.28 = 4,118.19/x
3. Step 3: Cross multiply
   6,111.09x = 8,420.28 × 4,118.19
4. Step 4: Simplify right side
   6,111.09x = 34,676,250.20
5. Step 5: Solve for x
   x = 34,676,250.20/6,111.09
6. Step 6: Final answer
   x = 5,674.32