Finding the Fourth Proportional to 16,398.77, 24,601.80 and 5,305.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,398.77 : 24,601.80 = 5,305.21 : x
2. Step 2: Convert to fraction form
   16,398.77/24,601.80 = 5,305.21/x
3. Step 3: Cross multiply
   16,398.77x = 24,601.80 × 5,305.21
4. Step 4: Simplify right side
   16,398.77x = 130,517,592.37
5. Step 5: Solve for x
   x = 130,517,592.37/16,398.77
6. Step 6: Final answer
   x = 7,958.99