Finding the Fourth Proportional to 23,300.88, 32,154.21 and 12,690.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,300.88 : 32,154.21 = 12,690.60 : x
2. Step 2: Convert to fraction form
   23,300.88/32,154.21 = 12,690.60/x
3. Step 3: Cross multiply
   23,300.88x = 32,154.21 × 12,690.60
4. Step 4: Simplify right side
   23,300.88x = 408,056,217.43
5. Step 5: Solve for x
   x = 408,056,217.43/23,300.88
6. Step 6: Final answer
   x = 17,512.48