Finding the Fourth Proportional to 23,470.50, 32,389.29 and 12,860.55

Step by Step Solution

1. Step 1: Write the proportion equation
   23,470.50 : 32,389.29 = 12,860.55 : x
2. Step 2: Convert to fraction form
   23,470.50/32,389.29 = 12,860.55/x
3. Step 3: Cross multiply
   23,470.50x = 32,389.29 × 12,860.55
4. Step 4: Simplify right side
   23,470.50x = 416,544,083.51
5. Step 5: Solve for x
   x = 416,544,083.51/23,470.50
6. Step 6: Final answer
   x = 17,747.56