Finding the Fourth Proportional to 23,064.14, 31,824.28 and 12,990.43

Step by Step Solution

1. Step 1: Write the proportion equation
   23,064.14 : 31,824.28 = 12,990.43 : x
2. Step 2: Convert to fraction form
   23,064.14/31,824.28 = 12,990.43/x
3. Step 3: Cross multiply
   23,064.14x = 31,824.28 × 12,990.43
4. Step 4: Simplify right side
   23,064.14x = 413,410,922.52
5. Step 5: Solve for x
   x = 413,410,922.52/23,064.14
6. Step 6: Final answer
   x = 17,924.40