Finding the Fourth Proportional to 4,473.60, 6,173.76 and 3,147.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,473.60 : 6,173.76 = 3,147.72 : x
2. Step 2: Convert to fraction form
   4,473.60/6,173.76 = 3,147.72/x
3. Step 3: Cross multiply
   4,473.60x = 6,173.76 × 3,147.72
4. Step 4: Simplify right side
   4,473.60x = 19,433,267.83
5. Step 5: Solve for x
   x = 19,433,267.83/4,473.60
6. Step 6: Final answer
   x = 4,343.99