Finding the Fourth Proportional to 11,315.92, 15,621.59 and 7,069.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,315.92 : 15,621.59 = 7,069.34 : x
2. Step 2: Convert to fraction form
   11,315.92/15,621.59 = 7,069.34/x
3. Step 3: Cross multiply
   11,315.92x = 15,621.59 × 7,069.34
4. Step 4: Simplify right side
   11,315.92x = 110,434,329.20
5. Step 5: Solve for x
   x = 110,434,329.20/11,315.92
6. Step 6: Final answer
   x = 9,759.20