Finding the Fourth Proportional to 12,940.50, 17,857.89 and 7,352.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,940.50 : 17,857.89 = 7,352.58 : x
2. Step 2: Convert to fraction form
   12,940.50/17,857.89 = 7,352.58/x
3. Step 3: Cross multiply
   12,940.50x = 17,857.89 × 7,352.58
4. Step 4: Simplify right side
   12,940.50x = 131,301,564.86
5. Step 5: Solve for x
   x = 131,301,564.86/12,940.50
6. Step 6: Final answer
   x = 10,146.56