Finding the Fourth Proportional to 23,695.48, 32,699.78 and 12,940.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,695.48 : 32,699.78 = 12,940.50 : x
2. Step 2: Convert to fraction form
   23,695.48/32,699.78 = 12,940.50/x
3. Step 3: Cross multiply
   23,695.48x = 32,699.78 × 12,940.50
4. Step 4: Simplify right side
   23,695.48x = 423,151,438.39
5. Step 5: Solve for x
   x = 423,151,438.39/23,695.48
6. Step 6: Final answer
   x = 17,857.90