Finding the Fourth Proportional to 8,499.86, 12,736.74 and 3,566.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.86 : 12,736.74 = 3,566.78 : x
2. Step 2: Convert to fraction form
   8,499.86/12,736.74 = 3,566.78/x
3. Step 3: Cross multiply
   8,499.86x = 12,736.74 × 3,566.78
4. Step 4: Simplify right side
   8,499.86x = 45,429,149.50
5. Step 5: Solve for x
   x = 45,429,149.50/8,499.86
6. Step 6: Final answer
   x = 5,344.69