Finding the Fourth Proportional to 12,404.96, 17,121.55 and 7,629.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.96 : 17,121.55 = 7,629.01 : x
2. Step 2: Convert to fraction form
   12,404.96/17,121.55 = 7,629.01/x
3. Step 3: Cross multiply
   12,404.96x = 17,121.55 × 7,629.01
4. Step 4: Simplify right side
   12,404.96x = 130,620,466.02
5. Step 5: Solve for x
   x = 130,620,466.02/12,404.96
6. Step 6: Final answer
   x = 10,529.70