Finding the Fourth Proportional to 12,577.07, 18,864.52 and 4,256.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,577.07 : 18,864.52 = 4,256.91 : x
2. Step 2: Convert to fraction form
   12,577.07/18,864.52 = 4,256.91/x
3. Step 3: Cross multiply
   12,577.07x = 18,864.52 × 4,256.91
4. Step 4: Simplify right side
   12,577.07x = 80,304,469.51
5. Step 5: Solve for x
   x = 80,304,469.51/12,577.07
6. Step 6: Final answer
   x = 6,384.99