Finding the Fourth Proportional to 6,145.38, 8,479.80 and 3,627.60

Step by Step Solution

1. Step 1: Write the proportion equation
   6,145.38 : 8,479.80 = 3,627.60 : x
2. Step 2: Convert to fraction form
   6,145.38/8,479.80 = 3,627.60/x
3. Step 3: Cross multiply
   6,145.38x = 8,479.80 × 3,627.60
4. Step 4: Simplify right side
   6,145.38x = 30,761,322.48
5. Step 5: Solve for x
   x = 30,761,322.48/6,145.38
6. Step 6: Final answer
   x = 5,005.60