Finding the Fourth Proportional to 23,601.51, 32,570.37 and 12,991.86

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.51 : 32,570.37 = 12,991.86 : x
2. Step 2: Convert to fraction form
   23,601.51/32,570.37 = 12,991.86/x
3. Step 3: Cross multiply
   23,601.51x = 32,570.37 × 12,991.86
4. Step 4: Simplify right side
   23,601.51x = 423,149,687.19
5. Step 5: Solve for x
   x = 423,149,687.19/23,601.51
6. Step 6: Final answer
   x = 17,928.92