Finding the Fourth Proportional to 16,428.72, 24,647.40 and 7,659.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,428.72 : 24,647.40 = 7,659.12 : x
2. Step 2: Convert to fraction form
   16,428.72/24,647.40 = 7,659.12/x
3. Step 3: Cross multiply
   16,428.72x = 24,647.40 × 7,659.12
4. Step 4: Simplify right side
   16,428.72x = 188,777,394.29
5. Step 5: Solve for x
   x = 188,777,394.29/16,428.72
6. Step 6: Final answer
   x = 11,490.69