Finding the Fourth Proportional to 6,381.72, 8,806.50 and 3,549.30

Step by Step Solution

1. Step 1: Write the proportion equation
   6,381.72 : 8,806.50 = 3,549.30 : x
2. Step 2: Convert to fraction form
   6,381.72/8,806.50 = 3,549.30/x
3. Step 3: Cross multiply
   6,381.72x = 8,806.50 × 3,549.30
4. Step 4: Simplify right side
   6,381.72x = 31,256,910.45
5. Step 5: Solve for x
   x = 31,256,910.45/6,381.72
6. Step 6: Final answer
   x = 4,897.88