Finding the Fourth Proportional to 8,109.62, 12,157.94 and 3,495.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.62 : 12,157.94 = 3,495.86 : x
2. Step 2: Convert to fraction form
   8,109.62/12,157.94 = 3,495.86/x
3. Step 3: Cross multiply
   8,109.62x = 12,157.94 × 3,495.86
4. Step 4: Simplify right side
   8,109.62x = 42,502,404.08
5. Step 5: Solve for x
   x = 42,502,404.08/8,109.62
6. Step 6: Final answer
   x = 5,240.99