Finding the Fourth Proportional to 7,704.45, 10,616.42 and 5,315.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,704.45 : 10,616.42 = 5,315.15 : x
2. Step 2: Convert to fraction form
   7,704.45/10,616.42 = 5,315.15/x
3. Step 3: Cross multiply
   7,704.45x = 10,616.42 × 5,315.15
4. Step 4: Simplify right side
   7,704.45x = 56,427,904.59
5. Step 5: Solve for x
   x = 56,427,904.59/7,704.45
6. Step 6: Final answer
   x = 7,324.07