Finding the Fourth Proportional to 13,311.03, 19,960.78 and 7,069.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,311.03 : 19,960.78 = 7,069.68 : x
2. Step 2: Convert to fraction form
   13,311.03/19,960.78 = 7,069.68/x
3. Step 3: Cross multiply
   13,311.03x = 19,960.78 × 7,069.68
4. Step 4: Simplify right side
   13,311.03x = 141,116,322.73
5. Step 5: Solve for x
   x = 141,116,322.73/13,311.03
6. Step 6: Final answer
   x = 10,601.45