Finding the Fourth Proportional to 6,109.08, 8,429.82 and 3,420.45

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.08 : 8,429.82 = 3,420.45 : x
2. Step 2: Convert to fraction form
   6,109.08/8,429.82 = 3,420.45/x
3. Step 3: Cross multiply
   6,109.08x = 8,429.82 × 3,420.45
4. Step 4: Simplify right side
   6,109.08x = 28,833,777.82
5. Step 5: Solve for x
   x = 28,833,777.82/6,109.08
6. Step 6: Final answer
   x = 4,719.82