Finding the Fourth Proportional to 23,520.30, 32,457.90 and 12,910.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,520.30 : 32,457.90 = 12,910.12 : x
2. Step 2: Convert to fraction form
   23,520.30/32,457.90 = 12,910.12/x
3. Step 3: Cross multiply
   23,520.30x = 32,457.90 × 12,910.12
4. Step 4: Simplify right side
   23,520.30x = 419,035,383.95
5. Step 5: Solve for x
   x = 419,035,383.95/23,520.30
6. Step 6: Final answer
   x = 17,815.90