Finding the Fourth Proportional to 19,328.86, 26,659.04 and 16,644.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,328.86 : 26,659.04 = 16,644.72 : x
2. Step 2: Convert to fraction form
   19,328.86/26,659.04 = 16,644.72/x
3. Step 3: Cross multiply
   19,328.86x = 26,659.04 × 16,644.72
4. Step 4: Simplify right side
   19,328.86x = 443,732,256.27
5. Step 5: Solve for x
   x = 443,732,256.27/19,328.86
6. Step 6: Final answer
   x = 22,956.99