Finding the Fourth Proportional to 3,499.70, 5,281.96 and 3,499.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,499.70 : 5,281.96 = 3,499.70 : x
2. Step 2: Convert to fraction form
   3,499.70/5,281.96 = 3,499.70/x
3. Step 3: Cross multiply
   3,499.70x = 5,281.96 × 3,499.70
4. Step 4: Simplify right side
   3,499.70x = 18,485,257.91
5. Step 5: Solve for x
   x = 18,485,257.91/3,499.70
6. Step 6: Final answer
   x = 5,281.96