Finding the Fourth Proportional to 3,405.58, 5,111.95 and 3,018.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405.58 : 5,111.95 = 3,018.06 : x
2. Step 2: Convert to fraction form
   3,405.58/5,111.95 = 3,018.06/x
3. Step 3: Cross multiply
   3,405.58x = 5,111.95 × 3,018.06
4. Step 4: Simplify right side
   3,405.58x = 15,428,171.82
5. Step 5: Solve for x
   x = 15,428,171.82/3,405.58
6. Step 6: Final answer
   x = 4,530.26