Finding the Fourth Proportional to 23,300.12, 32,153.19 and 12,689.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,300.12 : 32,153.19 = 12,689.72 : x
2. Step 2: Convert to fraction form
   23,300.12/32,153.19 = 12,689.72/x
3. Step 3: Cross multiply
   23,300.12x = 32,153.19 × 12,689.72
4. Step 4: Simplify right side
   23,300.12x = 408,014,978.21
5. Step 5: Solve for x
   x = 408,014,978.21/23,300.12
6. Step 6: Final answer
   x = 17,511.28