Finding the Fourth Proportional to 13,113.48, 18,097.20 and 7,736.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,113.48 : 18,097.20 = 7,736.12 : x
2. Step 2: Convert to fraction form
   13,113.48/18,097.20 = 7,736.12/x
3. Step 3: Cross multiply
   13,113.48x = 18,097.20 × 7,736.12
4. Step 4: Simplify right side
   13,113.48x = 140,002,110.86
5. Step 5: Solve for x
   x = 140,002,110.86/13,113.48
6. Step 6: Final answer
   x = 10,676.20