Finding the Fourth Proportional to 12,748.26, 17,594.40 and 7,443.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,748.26 : 17,594.40 = 7,443.30 : x
2. Step 2: Convert to fraction form
   12,748.26/17,594.40 = 7,443.30/x
3. Step 3: Cross multiply
   12,748.26x = 17,594.40 × 7,443.30
4. Step 4: Simplify right side
   12,748.26x = 130,960,397.52
5. Step 5: Solve for x
   x = 130,960,397.52/12,748.26
6. Step 6: Final answer
   x = 10,272.81