Finding the Fourth Proportional to 6,380.72, 8,805.12 and 3,548.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,380.72 : 8,805.12 = 3,548.30 : x
2. Step 2: Convert to fraction form
   6,380.72/8,805.12 = 3,548.30/x
3. Step 3: Cross multiply
   6,380.72x = 8,805.12 × 3,548.30
4. Step 4: Simplify right side
   6,380.72x = 31,243,207.30
5. Step 5: Solve for x
   x = 31,243,207.30/6,380.72
6. Step 6: Final answer
   x = 4,896.50