Finding the Fourth Proportional to 23,276.10, 32,120.52 and 12,666

Step by Step Solution

1. Step 1: Write the proportion equation
   23,276.10 : 32,120.52 = 12,666 : x
2. Step 2: Convert to fraction form
   23,276.10/32,120.52 = 12,666/x
3. Step 3: Cross multiply
   23,276.10x = 32,120.52 × 12,666
4. Step 4: Simplify right side
   23,276.10x = 406,838,506.32
5. Step 5: Solve for x
   x = 406,838,506.32/23,276.10
6. Step 6: Final answer
   x = 17,478.81