Finding the Fourth Proportional to 7,178.83, 10,765.51 and 3,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,178.83 : 10,765.51 = 3,280.50 : x
2. Step 2: Convert to fraction form
   7,178.83/10,765.51 = 3,280.50/x
3. Step 3: Cross multiply
   7,178.83x = 10,765.51 × 3,280.50
4. Step 4: Simplify right side
   7,178.83x = 35,316,247.35
5. Step 5: Solve for x
   x = 35,316,247.35/7,178.83
6. Step 6: Final answer
   x = 4,919.50