Finding the Fourth Proportional to 12,927.72, 17,839.86 and 7,338.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,927.72 : 17,839.86 = 7,338.68 : x
2. Step 2: Convert to fraction form
   12,927.72/17,839.86 = 7,338.68/x
3. Step 3: Cross multiply
   12,927.72x = 17,839.86 × 7,338.68
4. Step 4: Simplify right side
   12,927.72x = 130,921,023.78
5. Step 5: Solve for x
   x = 130,921,023.78/12,927.72
6. Step 6: Final answer
   x = 10,127.15