Finding the Fourth Proportional to 9,410.28, 12,978.84 and 6,576.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.28 : 12,978.84 = 6,576.72 : x
2. Step 2: Convert to fraction form
   9,410.28/12,978.84 = 6,576.72/x
3. Step 3: Cross multiply
   9,410.28x = 12,978.84 × 6,576.72
4. Step 4: Simplify right side
   9,410.28x = 85,358,196.60
5. Step 5: Solve for x
   x = 85,358,196.60/9,410.28
6. Step 6: Final answer
   x = 9,070.74