Finding the Fourth Proportional to 10,763.15, 16,128.93 and 7,649.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,763.15 : 16,128.93 = 7,649.15 : x
2. Step 2: Convert to fraction form
   10,763.15/16,128.93 = 7,649.15/x
3. Step 3: Cross multiply
   10,763.15x = 16,128.93 × 7,649.15
4. Step 4: Simplify right side
   10,763.15x = 123,372,604.91
5. Step 5: Solve for x
   x = 123,372,604.91/10,763.15
6. Step 6: Final answer
   x = 11,462.50