Finding the Fourth Proportional to 10,767.24, 16,128.90 and 5,203.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,767.24 : 16,128.90 = 5,203.80 : x
2. Step 2: Convert to fraction form
   10,767.24/16,128.90 = 5,203.80/x
3. Step 3: Cross multiply
   10,767.24x = 16,128.90 × 5,203.80
4. Step 4: Simplify right side
   10,767.24x = 83,931,569.82
5. Step 5: Solve for x
   x = 83,931,569.82/10,767.24
6. Step 6: Final answer
   x = 7,795.09