Finding the Fourth Proportional to 8,280.05, 12,432.22 and 5,173.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,280.05 : 12,432.22 = 5,173.29 : x
2. Step 2: Convert to fraction form
   8,280.05/12,432.22 = 5,173.29/x
3. Step 3: Cross multiply
   8,280.05x = 12,432.22 × 5,173.29
4. Step 4: Simplify right side
   8,280.05x = 64,315,466.47
5. Step 5: Solve for x
   x = 64,315,466.47/8,280.05
6. Step 6: Final answer
   x = 7,767.53