Finding the Fourth Proportional to 13,072.50, 18,040.05 and 7,483.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,072.50 : 18,040.05 = 7,483.50 : x
2. Step 2: Convert to fraction form
   13,072.50/18,040.05 = 7,483.50/x
3. Step 3: Cross multiply
   13,072.50x = 18,040.05 × 7,483.50
4. Step 4: Simplify right side
   13,072.50x = 135,002,714.18
5. Step 5: Solve for x
   x = 135,002,714.18/13,072.50
6. Step 6: Final answer
   x = 10,327.23