Finding the Fourth Proportional to 3,669.69, 5,505.06 and 2,109.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.69 : 5,505.06 = 2,109.42 : x
2. Step 2: Convert to fraction form
   3,669.69/5,505.06 = 2,109.42/x
3. Step 3: Cross multiply
   3,669.69x = 5,505.06 × 2,109.42
4. Step 4: Simplify right side
   3,669.69x = 11,612,483.67
5. Step 5: Solve for x
   x = 11,612,483.67/3,669.69
6. Step 6: Final answer
   x = 3,164.43