Finding the Fourth Proportional to 12,155.50, 16,774.60 and 6,566.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,155.50 : 16,774.60 = 6,566.50 : x
2. Step 2: Convert to fraction form
   12,155.50/16,774.60 = 6,566.50/x
3. Step 3: Cross multiply
   12,155.50x = 16,774.60 × 6,566.50
4. Step 4: Simplify right side
   12,155.50x = 110,150,410.90
5. Step 5: Solve for x
   x = 110,150,410.90/12,155.50
6. Step 6: Final answer
   x = 9,061.78