Finding the Fourth Proportional to 12,872.60, 17,764.32 and 7,567.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,872.60 : 17,764.32 = 7,567.50 : x
2. Step 2: Convert to fraction form
   12,872.60/17,764.32 = 7,567.50/x
3. Step 3: Cross multiply
   12,872.60x = 17,764.32 × 7,567.50
4. Step 4: Simplify right side
   12,872.60x = 134,431,491.60
5. Step 5: Solve for x
   x = 134,431,491.60/12,872.60
6. Step 6: Final answer
   x = 10,443.23