Finding the Fourth Proportional to 12,864.04, 17,744.94 and 7,557.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,864.04 : 17,744.94 = 7,557.76 : x
2. Step 2: Convert to fraction form
   12,864.04/17,744.94 = 7,557.76/x
3. Step 3: Cross multiply
   12,864.04x = 17,744.94 × 7,557.76
4. Step 4: Simplify right side
   12,864.04x = 134,111,997.73
5. Step 5: Solve for x
   x = 134,111,997.73/12,864.04
6. Step 6: Final answer
   x = 10,425.34