Finding the Fourth Proportional to 6,218.22, 9,320.55 and 3,100.53

Step by Step Solution

1. Step 1: Write the proportion equation
   6,218.22 : 9,320.55 = 3,100.53 : x
2. Step 2: Convert to fraction form
   6,218.22/9,320.55 = 3,100.53/x
3. Step 3: Cross multiply
   6,218.22x = 9,320.55 × 3,100.53
4. Step 4: Simplify right side
   6,218.22x = 28,898,644.89
5. Step 5: Solve for x
   x = 28,898,644.89/6,218.22
6. Step 6: Final answer
   x = 4,647.41