Finding the Fourth Proportional to 13,148.90, 18,143.04 and 7,483.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,148.90 : 18,143.04 = 7,483.31 : x
2. Step 2: Convert to fraction form
   13,148.90/18,143.04 = 7,483.31/x
3. Step 3: Cross multiply
   13,148.90x = 18,143.04 × 7,483.31
4. Step 4: Simplify right side
   13,148.90x = 135,770,040.78
5. Step 5: Solve for x
   x = 135,770,040.78/13,148.90
6. Step 6: Final answer
   x = 10,325.58