Finding the Fourth Proportional to 10,921.48, 16,384.04 and 3,425.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,921.48 : 16,384.04 = 3,425.52 : x
2. Step 2: Convert to fraction form
   10,921.48/16,384.04 = 3,425.52/x
3. Step 3: Cross multiply
   10,921.48x = 16,384.04 × 3,425.52
4. Step 4: Simplify right side
   10,921.48x = 56,123,856.70
5. Step 5: Solve for x
   x = 56,123,856.70/10,921.48
6. Step 6: Final answer
   x = 5,138.85