Finding the Fourth Proportional to 16,152.16, 22,289.91 and 9,078.64

Step by Step Solution

1. Step 1: Write the proportion equation
   16,152.16 : 22,289.91 = 9,078.64 : x
2. Step 2: Convert to fraction form
   16,152.16/22,289.91 = 9,078.64/x
3. Step 3: Cross multiply
   16,152.16x = 22,289.91 × 9,078.64
4. Step 4: Simplify right side
   16,152.16x = 202,362,068.52
5. Step 5: Solve for x
   x = 202,362,068.52/16,152.16
6. Step 6: Final answer
   x = 12,528.48