Finding the Fourth Proportional to 10,561.28, 15,845.52 and 7,065.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,561.28 : 15,845.52 = 7,065.44 : x
2. Step 2: Convert to fraction form
   10,561.28/15,845.52 = 7,065.44/x
3. Step 3: Cross multiply
   10,561.28x = 15,845.52 × 7,065.44
4. Step 4: Simplify right side
   10,561.28x = 111,955,570.83
5. Step 5: Solve for x
   x = 111,955,570.83/10,561.28
6. Step 6: Final answer
   x = 10,600.57