Finding the Fourth Proportional to 16,145.37, 22,279.59 and 9,432.90

Step by Step Solution

1. Step 1: Write the proportion equation
   16,145.37 : 22,279.59 = 9,432.90 : x
2. Step 2: Convert to fraction form
   16,145.37/22,279.59 = 9,432.90/x
3. Step 3: Cross multiply
   16,145.37x = 22,279.59 × 9,432.90
4. Step 4: Simplify right side
   16,145.37x = 210,161,144.51
5. Step 5: Solve for x
   x = 210,161,144.51/16,145.37
6. Step 6: Final answer
   x = 13,016.81