Finding the Fourth Proportional to 23,300.62, 32,154.89 and 12,690.29

Step by Step Solution

1. Step 1: Write the proportion equation
   23,300.62 : 32,154.89 = 12,690.29 : x
2. Step 2: Convert to fraction form
   23,300.62/32,154.89 = 12,690.29/x
3. Step 3: Cross multiply
   23,300.62x = 32,154.89 × 12,690.29
4. Step 4: Simplify right side
   23,300.62x = 408,054,879.02
5. Step 5: Solve for x
   x = 408,054,879.02/23,300.62
6. Step 6: Final answer
   x = 17,512.62