Finding the Fourth Proportional to 23,300.19, 32,153.40 and 12,689.64

Step by Step Solution

1. Step 1: Write the proportion equation
   23,300.19 : 32,153.40 = 12,689.64 : x
2. Step 2: Convert to fraction form
   23,300.19/32,153.40 = 12,689.64/x
3. Step 3: Cross multiply
   23,300.19x = 32,153.40 × 12,689.64
4. Step 4: Simplify right side
   23,300.19x = 408,015,070.78
5. Step 5: Solve for x
   x = 408,015,070.78/23,300.19
6. Step 6: Final answer
   x = 17,511.23