Finding the Fourth Proportional to 12,677.52, 17,486.76 and 7,957.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,677.52 : 17,486.76 = 7,957.68 : x
2. Step 2: Convert to fraction form
   12,677.52/17,486.76 = 7,957.68/x
3. Step 3: Cross multiply
   12,677.52x = 17,486.76 × 7,957.68
4. Step 4: Simplify right side
   12,677.52x = 139,154,040.32
5. Step 5: Solve for x
   x = 139,154,040.32/12,677.52
6. Step 6: Final answer
   x = 10,976.44