Finding the Fourth Proportional to 23,064.17, 31,824.33 and 12,990.45

Step by Step Solution

1. Step 1: Write the proportion equation
   23,064.17 : 31,824.33 = 12,990.45 : x
2. Step 2: Convert to fraction form
   23,064.17/31,824.33 = 12,990.45/x
3. Step 3: Cross multiply
   23,064.17x = 31,824.33 × 12,990.45
4. Step 4: Simplify right side
   23,064.17x = 413,412,438.28
5. Step 5: Solve for x
   x = 413,412,438.28/23,064.17
6. Step 6: Final answer
   x = 17,924.45