Finding the Fourth Proportional to 6,156.18, 8,495.05 and 3,638.09

Step by Step Solution

1. Step 1: Write the proportion equation
   6,156.18 : 8,495.05 = 3,638.09 : x
2. Step 2: Convert to fraction form
   6,156.18/8,495.05 = 3,638.09/x
3. Step 3: Cross multiply
   6,156.18x = 8,495.05 × 3,638.09
4. Step 4: Simplify right side
   6,156.18x = 30,905,768.60
5. Step 5: Solve for x
   x = 30,905,768.60/6,156.18
6. Step 6: Final answer
   x = 5,020.28