Finding the Fourth Proportional to 16,921.37, 25,384.49 and 5,235.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,921.37 : 25,384.49 = 5,235.50 : x
2. Step 2: Convert to fraction form
   16,921.37/25,384.49 = 5,235.50/x
3. Step 3: Cross multiply
   16,921.37x = 25,384.49 × 5,235.50
4. Step 4: Simplify right side
   16,921.37x = 132,900,497.40
5. Step 5: Solve for x
   x = 132,900,497.40/16,921.37
6. Step 6: Final answer
   x = 7,854.00