Finding the Fourth Proportional to 23,601.95, 32,570.46 and 12,991.49

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.95 : 32,570.46 = 12,991.49 : x
2. Step 2: Convert to fraction form
   23,601.95/32,570.46 = 12,991.49/x
3. Step 3: Cross multiply
   23,601.95x = 32,570.46 × 12,991.49
4. Step 4: Simplify right side
   23,601.95x = 423,138,805.39
5. Step 5: Solve for x
   x = 423,138,805.39/23,601.95
6. Step 6: Final answer
   x = 17,928.13