Finding the Fourth Proportional to 10,940.67, 16,410.80 and 3,545.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,940.67 : 16,410.80 = 3,545.15 : x
2. Step 2: Convert to fraction form
   10,940.67/16,410.80 = 3,545.15/x
3. Step 3: Cross multiply
   10,940.67x = 16,410.80 × 3,545.15
4. Step 4: Simplify right side
   10,940.67x = 58,178,674.43
5. Step 5: Solve for x
   x = 58,178,674.43/10,940.67
6. Step 6: Final answer
   x = 5,317.65