Finding the Fourth Proportional to 12,074.77, 16,647.60 and 7,818.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,074.77 : 16,647.60 = 7,818.27 : x
2. Step 2: Convert to fraction form
   12,074.77/16,647.60 = 7,818.27/x
3. Step 3: Cross multiply
   12,074.77x = 16,647.60 × 7,818.27
4. Step 4: Simplify right side
   12,074.77x = 130,155,431.65
5. Step 5: Solve for x
   x = 130,155,431.65/12,074.77
6. Step 6: Final answer
   x = 10,779.12