Finding the Fourth Proportional to 6,144.21, 8,478.69 and 3,491.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,144.21 : 8,478.69 = 3,491.25 : x
2. Step 2: Convert to fraction form
   6,144.21/8,478.69 = 3,491.25/x
3. Step 3: Cross multiply
   6,144.21x = 8,478.69 × 3,491.25
4. Step 4: Simplify right side
   6,144.21x = 29,601,226.46
5. Step 5: Solve for x
   x = 29,601,226.46/6,144.21
6. Step 6: Final answer
   x = 4,817.74