Finding the Fourth Proportional to 16,402.72, 24,607.98 and 5,309.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,402.72 : 24,607.98 = 5,309.40 : x
2. Step 2: Convert to fraction form
   16,402.72/24,607.98 = 5,309.40/x
3. Step 3: Cross multiply
   16,402.72x = 24,607.98 × 5,309.40
4. Step 4: Simplify right side
   16,402.72x = 130,653,609.01
5. Step 5: Solve for x
   x = 130,653,609.01/16,402.72
6. Step 6: Final answer
   x = 7,965.36