Finding the Fourth Proportional to 10,767.15, 14,865.91 and 9,629.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,767.15 : 14,865.91 = 9,629.28 : x
2. Step 2: Convert to fraction form
   10,767.15/14,865.91 = 9,629.28/x
3. Step 3: Cross multiply
   10,767.15x = 14,865.91 × 9,629.28
4. Step 4: Simplify right side
   10,767.15x = 143,147,985.77
5. Step 5: Solve for x
   x = 143,147,985.77/10,767.15
6. Step 6: Final answer
   x = 13,294.88