Finding the Fourth Proportional to 14,688.76, 20,271.72 and 8,401

Step by Step Solution

1. Step 1: Write the proportion equation
   14,688.76 : 20,271.72 = 8,401 : x
2. Step 2: Convert to fraction form
   14,688.76/20,271.72 = 8,401/x
3. Step 3: Cross multiply
   14,688.76x = 20,271.72 × 8,401
4. Step 4: Simplify right side
   14,688.76x = 170,302,719.72
5. Step 5: Solve for x
   x = 170,302,719.72/14,688.76
6. Step 6: Final answer
   x = 11,594.08