Finding the Fourth Proportional to 23,275.80, 32,120.82 and 12,665.40

Step by Step Solution

1. Step 1: Write the proportion equation
   23,275.80 : 32,120.82 = 12,665.40 : x
2. Step 2: Convert to fraction form
   23,275.80/32,120.82 = 12,665.40/x
3. Step 3: Cross multiply
   23,275.80x = 32,120.82 × 12,665.40
4. Step 4: Simplify right side
   23,275.80x = 406,823,033.63
5. Step 5: Solve for x
   x = 406,823,033.63/23,275.80
6. Step 6: Final answer
   x = 17,478.37