Finding the Fourth Proportional to 16,145.08, 22,290.15 and 12,801.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,145.08 : 22,290.15 = 12,801.40 : x
2. Step 2: Convert to fraction form
   16,145.08/22,290.15 = 12,801.40/x
3. Step 3: Cross multiply
   16,145.08x = 22,290.15 × 12,801.40
4. Step 4: Simplify right side
   16,145.08x = 285,345,126.21
5. Step 5: Solve for x
   x = 285,345,126.21/16,145.08
6. Step 6: Final answer
   x = 17,673.81