Finding the Fourth Proportional to 23,591.70, 32,556.87 and 12,981.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,591.70 : 32,556.87 = 12,981.78 : x
2. Step 2: Convert to fraction form
   23,591.70/32,556.87 = 12,981.78/x
3. Step 3: Cross multiply
   23,591.70x = 32,556.87 × 12,981.78
4. Step 4: Simplify right side
   23,591.70x = 422,646,123.83
5. Step 5: Solve for x
   x = 422,646,123.83/23,591.70
6. Step 6: Final answer
   x = 17,915.03