Finding the Fourth Proportional to 12,866.52, 17,751.78 and 7,561.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,866.52 : 17,751.78 = 7,561.56 : x
2. Step 2: Convert to fraction form
   12,866.52/17,751.78 = 7,561.56/x
3. Step 3: Cross multiply
   12,866.52x = 17,751.78 × 7,561.56
4. Step 4: Simplify right side
   12,866.52x = 134,231,149.58
5. Step 5: Solve for x
   x = 134,231,149.58/12,866.52
6. Step 6: Final answer
   x = 10,432.59