Finding the Fourth Proportional to 23,033.68, 31,764.72 and 21,315.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,033.68 : 31,764.72 = 21,315.52 : x
2. Step 2: Convert to fraction form
   23,033.68/31,764.72 = 21,315.52/x
3. Step 3: Cross multiply
   23,033.68x = 31,764.72 × 21,315.52
4. Step 4: Simplify right side
   23,033.68x = 677,081,524.45
5. Step 5: Solve for x
   x = 677,081,524.45/23,033.68
6. Step 6: Final answer
   x = 29,395.28