Finding the Fourth Proportional to 6,611.35, 9,123.78 and 3,627.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,611.35 : 9,123.78 = 3,627.15 : x
2. Step 2: Convert to fraction form
   6,611.35/9,123.78 = 3,627.15/x
3. Step 3: Cross multiply
   6,611.35x = 9,123.78 × 3,627.15
4. Step 4: Simplify right side
   6,611.35x = 33,093,262.89
5. Step 5: Solve for x
   x = 33,093,262.89/6,611.35
6. Step 6: Final answer
   x = 5,005.53