Finding the Fourth Proportional to 23,719.80, 32,733.90 and 12,965.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,719.80 : 32,733.90 = 12,965.10 : x
2. Step 2: Convert to fraction form
   23,719.80/32,733.90 = 12,965.10/x
3. Step 3: Cross multiply
   23,719.80x = 32,733.90 × 12,965.10
4. Step 4: Simplify right side
   23,719.80x = 424,398,286.89
5. Step 5: Solve for x
   x = 424,398,286.89/23,719.80
6. Step 6: Final answer
   x = 17,892.15