Finding the Fourth Proportional to 8,401.72, 12,598.74 and 2,557.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,401.72 : 12,598.74 = 2,557.24 : x
2. Step 2: Convert to fraction form
   8,401.72/12,598.74 = 2,557.24/x
3. Step 3: Cross multiply
   8,401.72x = 12,598.74 × 2,557.24
4. Step 4: Simplify right side
   8,401.72x = 32,218,001.88
5. Step 5: Solve for x
   x = 32,218,001.88/8,401.72
6. Step 6: Final answer
   x = 3,834.69