Finding the Fourth Proportional to 7,012.17, 10,505.30 and 3,545.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,012.17 : 10,505.30 = 3,545.37 : x
2. Step 2: Convert to fraction form
   7,012.17/10,505.30 = 3,545.37/x
3. Step 3: Cross multiply
   7,012.17x = 10,505.30 × 3,545.37
4. Step 4: Simplify right side
   7,012.17x = 37,245,157.73
5. Step 5: Solve for x
   x = 37,245,157.73/7,012.17
6. Step 6: Final answer
   x = 5,311.50