Finding the Fourth Proportional to 3,505.94, 5,266.14 and 3,389.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,505.94 : 5,266.14 = 3,389.30 : x
2. Step 2: Convert to fraction form
   3,505.94/5,266.14 = 3,389.30/x
3. Step 3: Cross multiply
   3,505.94x = 5,266.14 × 3,389.30
4. Step 4: Simplify right side
   3,505.94x = 17,848,528.30
5. Step 5: Solve for x
   x = 17,848,528.30/3,505.94
6. Step 6: Final answer
   x = 5,090.94