Finding the Fourth Proportional to 16,977.29, 23,428.56 and 9,424.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,977.29 : 23,428.56 = 9,424.72 : x
2. Step 2: Convert to fraction form
   16,977.29/23,428.56 = 9,424.72/x
3. Step 3: Cross multiply
   16,977.29x = 23,428.56 × 9,424.72
4. Step 4: Simplify right side
   16,977.29x = 220,807,559.43
5. Step 5: Solve for x
   x = 220,807,559.43/16,977.29
6. Step 6: Final answer
   x = 13,006.05