Finding the Fourth Proportional to 11,605.49, 17,412.03 and 3,709.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,605.49 : 17,412.03 = 3,709.31 : x
2. Step 2: Convert to fraction form
   11,605.49/17,412.03 = 3,709.31/x
3. Step 3: Cross multiply
   11,605.49x = 17,412.03 × 3,709.31
4. Step 4: Simplify right side
   11,605.49x = 64,586,529.94
5. Step 5: Solve for x
   x = 64,586,529.94/11,605.49
6. Step 6: Final answer
   x = 5,565.17