Finding the Fourth Proportional to 6,280.63, 8,667.29 and 3,486.13

Step by Step Solution

1. Step 1: Write the proportion equation
   6,280.63 : 8,667.29 = 3,486.13 : x
2. Step 2: Convert to fraction form
   6,280.63/8,667.29 = 3,486.13/x
3. Step 3: Cross multiply
   6,280.63x = 8,667.29 × 3,486.13
4. Step 4: Simplify right side
   6,280.63x = 30,215,299.69
5. Step 5: Solve for x
   x = 30,215,299.69/6,280.63
6. Step 6: Final answer
   x = 4,810.87