Finding the Fourth Proportional to 12,333.96, 17,028.72 and 7,620.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,333.96 : 17,028.72 = 7,620.96 : x
2. Step 2: Convert to fraction form
   12,333.96/17,028.72 = 7,620.96/x
3. Step 3: Cross multiply
   12,333.96x = 17,028.72 × 7,620.96
4. Step 4: Simplify right side
   12,333.96x = 129,775,193.97
5. Step 5: Solve for x
   x = 129,775,193.97/12,333.96
6. Step 6: Final answer
   x = 10,521.78