Finding the Fourth Proportional to 7,172.96, 9,898.72 and 4,340.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,172.96 : 9,898.72 = 4,340.48 : x
2. Step 2: Convert to fraction form
   7,172.96/9,898.72 = 4,340.48/x
3. Step 3: Cross multiply
   7,172.96x = 9,898.72 × 4,340.48
4. Step 4: Simplify right side
   7,172.96x = 42,965,196.19
5. Step 5: Solve for x
   x = 42,965,196.19/7,172.96
6. Step 6: Final answer
   x = 5,989.88