Finding the Fourth Proportional to 6,820.16, 10,225.69 and 5,505.53

Step by Step Solution

1. Step 1: Write the proportion equation
   6,820.16 : 10,225.69 = 5,505.53 : x
2. Step 2: Convert to fraction form
   6,820.16/10,225.69 = 5,505.53/x
3. Step 3: Cross multiply
   6,820.16x = 10,225.69 × 5,505.53
4. Step 4: Simplify right side
   6,820.16x = 56,297,843.07
5. Step 5: Solve for x
   x = 56,297,843.07/6,820.16
6. Step 6: Final answer
   x = 8,254.62