Finding the Fourth Proportional to 11,443.60, 17,176.20 and 7,069.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,443.60 : 17,176.20 = 7,069.60 : x
2. Step 2: Convert to fraction form
   11,443.60/17,176.20 = 7,069.60/x
3. Step 3: Cross multiply
   11,443.60x = 17,176.20 × 7,069.60
4. Step 4: Simplify right side
   11,443.60x = 121,428,863.52
5. Step 5: Solve for x
   x = 121,428,863.52/11,443.60
6. Step 6: Final answer
   x = 10,611.07