Finding the Fourth Proportional to 10,185.41, 15,279.64 and 3,611.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,185.41 : 15,279.64 = 3,611.05 : x
2. Step 2: Convert to fraction form
   10,185.41/15,279.64 = 3,611.05/x
3. Step 3: Cross multiply
   10,185.41x = 15,279.64 × 3,611.05
4. Step 4: Simplify right side
   10,185.41x = 55,175,496.80
5. Step 5: Solve for x
   x = 55,175,496.80/10,185.41
6. Step 6: Final answer
   x = 5,417.11