Finding the Fourth Proportional to 23,301, 32,155.56 and 12,690.36

Step by Step Solution

1. Step 1: Write the proportion equation
   23,301 : 32,155.56 = 12,690.36 : x
2. Step 2: Convert to fraction form
   23,301/32,155.56 = 12,690.36/x
3. Step 3: Cross multiply
   23,301x = 32,155.56 × 12,690.36
4. Step 4: Simplify right side
   23,301x = 408,065,632.40
5. Step 5: Solve for x
   x = 408,065,632.40/23,301
6. Step 6: Final answer
   x = 17,512.79