Finding the Fourth Proportional to 10,419.72, 15,629.52 and 2,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,419.72 : 15,629.52 = 2,628.50 : x
2. Step 2: Convert to fraction form
   10,419.72/15,629.52 = 2,628.50/x
3. Step 3: Cross multiply
   10,419.72x = 15,629.52 × 2,628.50
4. Step 4: Simplify right side
   10,419.72x = 41,082,193.32
5. Step 5: Solve for x
   x = 41,082,193.32/10,419.72
6. Step 6: Final answer
   x = 3,942.73