Finding the Fourth Proportional to 12,880.86, 17,775.56 and 7,575.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,880.86 : 17,775.56 = 7,575.68 : x
2. Step 2: Convert to fraction form
   12,880.86/17,775.56 = 7,575.68/x
3. Step 3: Cross multiply
   12,880.86x = 17,775.56 × 7,575.68
4. Step 4: Simplify right side
   12,880.86x = 134,661,954.38
5. Step 5: Solve for x
   x = 134,661,954.38/12,880.86
6. Step 6: Final answer
   x = 10,454.42