Finding the Fourth Proportional to 11,083.40, 16,621.52 and 3,685.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,083.40 : 16,621.52 = 3,685.89 : x
2. Step 2: Convert to fraction form
   11,083.40/16,621.52 = 3,685.89/x
3. Step 3: Cross multiply
   11,083.40x = 16,621.52 × 3,685.89
4. Step 4: Simplify right side
   11,083.40x = 61,265,075.92
5. Step 5: Solve for x
   x = 61,265,075.92/11,083.40
6. Step 6: Final answer
   x = 5,527.65