Finding the Fourth Proportional to 23,601.75, 32,570.42 and 12,991.34

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.75 : 32,570.42 = 12,991.34 : x
2. Step 2: Convert to fraction form
   23,601.75/32,570.42 = 12,991.34/x
3. Step 3: Cross multiply
   23,601.75x = 32,570.42 × 12,991.34
4. Step 4: Simplify right side
   23,601.75x = 423,133,172.35
5. Step 5: Solve for x
   x = 423,133,172.35/23,601.75
6. Step 6: Final answer
   x = 17,928.04