Finding the Fourth Proportional to 23,601.96, 32,570.58 and 12,991.32

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.96 : 32,570.58 = 12,991.32 : x
2. Step 2: Convert to fraction form
   23,601.96/32,570.58 = 12,991.32/x
3. Step 3: Cross multiply
   23,601.96x = 32,570.58 × 12,991.32
4. Step 4: Simplify right side
   23,601.96x = 423,134,827.37
5. Step 5: Solve for x
   x = 423,134,827.37/23,601.96
6. Step 6: Final answer
   x = 17,927.95