Finding the Fourth Proportional to 13,131.48, 18,120.76 and 7,465.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.48 : 18,120.76 = 7,465.49 : x
2. Step 2: Convert to fraction form
   13,131.48/18,120.76 = 7,465.49/x
3. Step 3: Cross multiply
   13,131.48x = 18,120.76 × 7,465.49
4. Step 4: Simplify right side
   13,131.48x = 135,280,352.57
5. Step 5: Solve for x
   x = 135,280,352.57/13,131.48
6. Step 6: Final answer
   x = 10,301.99