Finding the Fourth Proportional to 16,470, 24,666.56 and 12,760.32

Step by Step Solution

1. Step 1: Write the proportion equation
   16,470 : 24,666.56 = 12,760.32 : x
2. Step 2: Convert to fraction form
   16,470/24,666.56 = 12,760.32/x
3. Step 3: Cross multiply
   16,470x = 24,666.56 × 12,760.32
4. Step 4: Simplify right side
   16,470x = 314,753,198.90
5. Step 5: Solve for x
   x = 314,753,198.90/16,470
6. Step 6: Final answer
   x = 19,110.70