Finding the Fourth Proportional to 9,076.78, 13,616.99 and 4,145.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,076.78 : 13,616.99 = 4,145.10 : x
2. Step 2: Convert to fraction form
   9,076.78/13,616.99 = 4,145.10/x
3. Step 3: Cross multiply
   9,076.78x = 13,616.99 × 4,145.10
4. Step 4: Simplify right side
   9,076.78x = 56,443,785.25
5. Step 5: Solve for x
   x = 56,443,785.25/9,076.78
6. Step 6: Final answer
   x = 6,218.48