Finding the Fourth Proportional to 12,472.75, 17,210.83 and 7,629.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,472.75 : 17,210.83 = 7,629.91 : x
2. Step 2: Convert to fraction form
   12,472.75/17,210.83 = 7,629.91/x
3. Step 3: Cross multiply
   12,472.75x = 17,210.83 × 7,629.91
4. Step 4: Simplify right side
   12,472.75x = 131,317,083.93
5. Step 5: Solve for x
   x = 131,317,083.93/12,472.75
6. Step 6: Final answer
   x = 10,528.32