Finding the Fourth Proportional to 23,601.24, 32,570.22 and 12,991.32

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.24 : 32,570.22 = 12,991.32 : x
2. Step 2: Convert to fraction form
   23,601.24/32,570.22 = 12,991.32/x
3. Step 3: Cross multiply
   23,601.24x = 32,570.22 × 12,991.32
4. Step 4: Simplify right side
   23,601.24x = 423,130,150.49
5. Step 5: Solve for x
   x = 423,130,150.49/23,601.24
6. Step 6: Final answer
   x = 17,928.30