Finding the Fourth Proportional to 11,072.37, 16,611.36 and 3,678.90

Step by Step Solution

1. Step 1: Write the proportion equation
   11,072.37 : 16,611.36 = 3,678.90 : x
2. Step 2: Convert to fraction form
   11,072.37/16,611.36 = 3,678.90/x
3. Step 3: Cross multiply
   11,072.37x = 16,611.36 × 3,678.90
4. Step 4: Simplify right side
   11,072.37x = 61,111,532.30
5. Step 5: Solve for x
   x = 61,111,532.30/11,072.37
6. Step 6: Final answer
   x = 5,519.28