Finding the Fourth Proportional to 23,128.02, 31,920.20 and 16,783.43

Step by Step Solution

1. Step 1: Write the proportion equation
   23,128.02 : 31,920.20 = 16,783.43 : x
2. Step 2: Convert to fraction form
   23,128.02/31,920.20 = 16,783.43/x
3. Step 3: Cross multiply
   23,128.02x = 31,920.20 × 16,783.43
4. Step 4: Simplify right side
   23,128.02x = 535,730,198.77
5. Step 5: Solve for x
   x = 535,730,198.77/23,128.02
6. Step 6: Final answer
   x = 23,163.69