Finding the Fourth Proportional to 23,685.29, 32,685.54 and 12,930.12

Step by Step Solution

1. Step 1: Write the proportion equation
   23,685.29 : 32,685.54 = 12,930.12 : x
2. Step 2: Convert to fraction form
   23,685.29/32,685.54 = 12,930.12/x
3. Step 3: Cross multiply
   23,685.29x = 32,685.54 × 12,930.12
4. Step 4: Simplify right side
   23,685.29x = 422,627,954.46
5. Step 5: Solve for x
   x = 422,627,954.46/23,685.29
6. Step 6: Final answer
   x = 17,843.48