Finding the Fourth Proportional to 16,920.01, 23,335.32 and 12,681.01

Step by Step Solution

1. Step 1: Write the proportion equation
   16,920.01 : 23,335.32 = 12,681.01 : x
2. Step 2: Convert to fraction form
   16,920.01/23,335.32 = 12,681.01/x
3. Step 3: Cross multiply
   16,920.01x = 23,335.32 × 12,681.01
4. Step 4: Simplify right side
   16,920.01x = 295,915,426.27
5. Step 5: Solve for x
   x = 295,915,426.27/16,920.01
6. Step 6: Final answer
   x = 17,489.08