Finding the Fourth Proportional to 8,380.88, 12,576.61 and 4,685.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,380.88 : 12,576.61 = 4,685.53 : x
2. Step 2: Convert to fraction form
   8,380.88/12,576.61 = 4,685.53/x
3. Step 3: Cross multiply
   8,380.88x = 12,576.61 × 4,685.53
4. Step 4: Simplify right side
   8,380.88x = 58,928,083.45
5. Step 5: Solve for x
   x = 58,928,083.45/8,380.88
6. Step 6: Final answer
   x = 7,031.26