Finding the Fourth Proportional to 21,589.57, 32,326.71 and 12,697.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,589.57 : 32,326.71 = 12,697.48 : x
2. Step 2: Convert to fraction form
   21,589.57/32,326.71 = 12,697.48/x
3. Step 3: Cross multiply
   21,589.57x = 32,326.71 × 12,697.48
4. Step 4: Simplify right side
   21,589.57x = 410,467,753.69
5. Step 5: Solve for x
   x = 410,467,753.69/21,589.57
6. Step 6: Final answer
   x = 19,012.32