Finding the Fourth Proportional to 23,601.34, 32,570.40 and 12,991.24

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.34 : 32,570.40 = 12,991.24 : x
2. Step 2: Convert to fraction form
   23,601.34/32,570.40 = 12,991.24/x
3. Step 3: Cross multiply
   23,601.34x = 32,570.40 × 12,991.24
4. Step 4: Simplify right side
   23,601.34x = 423,129,883.30
5. Step 5: Solve for x
   x = 423,129,883.30/23,601.34
6. Step 6: Final answer
   x = 17,928.21