Finding the Fourth Proportional to 23,556.47, 32,507.56 and 12,945.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,556.47 : 32,507.56 = 12,945.88 : x
2. Step 2: Convert to fraction form
   23,556.47/32,507.56 = 12,945.88/x
3. Step 3: Cross multiply
   23,556.47x = 32,507.56 × 12,945.88
4. Step 4: Simplify right side
   23,556.47x = 420,838,743.59
5. Step 5: Solve for x
   x = 420,838,743.59/23,556.47
6. Step 6: Final answer
   x = 17,865.10