Finding the Fourth Proportional to 10,080.75, 13,910.38 and 5,603.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,080.75 : 13,910.38 = 5,603.78 : x
2. Step 2: Convert to fraction form
   10,080.75/13,910.38 = 5,603.78/x
3. Step 3: Cross multiply
   10,080.75x = 13,910.38 × 5,603.78
4. Step 4: Simplify right side
   10,080.75x = 77,950,761.52
5. Step 5: Solve for x
   x = 77,950,761.52/10,080.75
6. Step 6: Final answer
   x = 7,732.63