Finding the Fourth Proportional to 6,111.28, 8,433.56 and 3,316.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.28 : 8,433.56 = 3,316.76 : x
2. Step 2: Convert to fraction form
   6,111.28/8,433.56 = 3,316.76/x
3. Step 3: Cross multiply
   6,111.28x = 8,433.56 × 3,316.76
4. Step 4: Simplify right side
   6,111.28x = 27,972,094.47
5. Step 5: Solve for x
   x = 27,972,094.47/6,111.28
6. Step 6: Final answer
   x = 4,577.13