Finding the Fourth Proportional to 23,275.71, 32,120.60 and 12,665.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,275.71 : 32,120.60 = 12,665.31 : x
2. Step 2: Convert to fraction form
   23,275.71/32,120.60 = 12,665.31/x
3. Step 3: Cross multiply
   23,275.71x = 32,120.60 × 12,665.31
4. Step 4: Simplify right side
   23,275.71x = 406,817,293.06
5. Step 5: Solve for x
   x = 406,817,293.06/23,275.71
6. Step 6: Final answer
   x = 17,478.19