Finding the Fourth Proportional to 23,601.86, 32,570.60 and 12,991.53

Step by Step Solution

1. Step 1: Write the proportion equation
   23,601.86 : 32,570.60 = 12,991.53 : x
2. Step 2: Convert to fraction form
   23,601.86/32,570.60 = 12,991.53/x
3. Step 3: Cross multiply
   23,601.86x = 32,570.60 × 12,991.53
4. Step 4: Simplify right side
   23,601.86x = 423,141,862.06
5. Step 5: Solve for x
   x = 423,141,862.06/23,601.86
6. Step 6: Final answer
   x = 17,928.33