Finding the Fourth Proportional to 23,518.56, 32,456.28 and 12,908.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,518.56 : 32,456.28 = 12,908.88 : x
2. Step 2: Convert to fraction form
   23,518.56/32,456.28 = 12,908.88/x
3. Step 3: Cross multiply
   23,518.56x = 32,456.28 × 12,908.88
4. Step 4: Simplify right side
   23,518.56x = 418,974,223.77
5. Step 5: Solve for x
   x = 418,974,223.77/23,518.56
6. Step 6: Final answer
   x = 17,814.62