Finding the Fourth Proportional to 6,111.12, 8,431.38 and 3,840.27

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.12 : 8,431.38 = 3,840.27 : x
2. Step 2: Convert to fraction form
   6,111.12/8,431.38 = 3,840.27/x
3. Step 3: Cross multiply
   6,111.12x = 8,431.38 × 3,840.27
4. Step 4: Simplify right side
   6,111.12x = 32,378,775.67
5. Step 5: Solve for x
   x = 32,378,775.67/6,111.12
6. Step 6: Final answer
   x = 5,298.34