Finding the Fourth Proportional to 13,105.98, 18,082.17 and 7,440.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,105.98 : 18,082.17 = 7,440.30 : x
2. Step 2: Convert to fraction form
   13,105.98/18,082.17 = 7,440.30/x
3. Step 3: Cross multiply
   13,105.98x = 18,082.17 × 7,440.30
4. Step 4: Simplify right side
   13,105.98x = 134,536,769.45
5. Step 5: Solve for x
   x = 134,536,769.45/13,105.98
6. Step 6: Final answer
   x = 10,265.30