Finding the Fourth Proportional to 9,128.28, 12,595.56 and 5,148.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.28 : 12,595.56 = 5,148.48 : x
2. Step 2: Convert to fraction form
   9,128.28/12,595.56 = 5,148.48/x
3. Step 3: Cross multiply
   9,128.28x = 12,595.56 × 5,148.48
4. Step 4: Simplify right side
   9,128.28x = 64,847,988.75
5. Step 5: Solve for x
   x = 64,847,988.75/9,128.28
6. Step 6: Final answer
   x = 7,104.08