Finding the Fourth Proportional to 23,613.59, 32,586.59 and 12,857.70

Step by Step Solution

1. Step 1: Write the proportion equation
   23,613.59 : 32,586.59 = 12,857.70 : x
2. Step 2: Convert to fraction form
   23,613.59/32,586.59 = 12,857.70/x
3. Step 3: Cross multiply
   23,613.59x = 32,586.59 × 12,857.70
4. Step 4: Simplify right side
   23,613.59x = 418,988,598.24
5. Step 5: Solve for x
   x = 418,988,598.24/23,613.59
6. Step 6: Final answer
   x = 17,743.54