Finding the Fourth Proportional to 16,155.10, 22,290.74 and 9,439.43

Step by Step Solution

1. Step 1: Write the proportion equation
   16,155.10 : 22,290.74 = 9,439.43 : x
2. Step 2: Convert to fraction form
   16,155.10/22,290.74 = 9,439.43/x
3. Step 3: Cross multiply
   16,155.10x = 22,290.74 × 9,439.43
4. Step 4: Simplify right side
   16,155.10x = 210,411,882.01
5. Step 5: Solve for x
   x = 210,411,882.01/16,155.10
6. Step 6: Final answer
   x = 13,024.49