Finding the Fourth Proportional to 23,315.16, 32,174.28 and 12,705

Step by Step Solution

1. Step 1: Write the proportion equation
   23,315.16 : 32,174.28 = 12,705 : x
2. Step 2: Convert to fraction form
   23,315.16/32,174.28 = 12,705/x
3. Step 3: Cross multiply
   23,315.16x = 32,174.28 × 12,705
4. Step 4: Simplify right side
   23,315.16x = 408,774,227.40
5. Step 5: Solve for x
   x = 408,774,227.40/23,315.16
6. Step 6: Final answer
   x = 17,532.55