Finding the Fourth Proportional to 16,156.89, 22,292.28 and 9,438.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,156.89 : 22,292.28 = 9,438.71 : x
2. Step 2: Convert to fraction form
   16,156.89/22,292.28 = 9,438.71/x
3. Step 3: Cross multiply
   16,156.89x = 22,292.28 × 9,438.71
4. Step 4: Simplify right side
   16,156.89x = 210,410,254.70
5. Step 5: Solve for x
   x = 210,410,254.70/16,156.89
6. Step 6: Final answer
   x = 13,022.94