Finding the Fourth Proportional to 8,412.86, 12,621.72 and 3,482.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,412.86 : 12,621.72 = 3,482.76 : x
2. Step 2: Convert to fraction form
   8,412.86/12,621.72 = 3,482.76/x
3. Step 3: Cross multiply
   8,412.86x = 12,621.72 × 3,482.76
4. Step 4: Simplify right side
   8,412.86x = 43,958,421.55
5. Step 5: Solve for x
   x = 43,958,421.55/8,412.86
6. Step 6: Final answer
   x = 5,225.15