Finding the Fourth Proportional to 16,772.25, 23,145.71 and 9,320.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,772.25 : 23,145.71 = 9,320.25 : x
2. Step 2: Convert to fraction form
   16,772.25/23,145.71 = 9,320.25/x
3. Step 3: Cross multiply
   16,772.25x = 23,145.71 × 9,320.25
4. Step 4: Simplify right side
   16,772.25x = 215,723,803.63
5. Step 5: Solve for x
   x = 215,723,803.63/16,772.25
6. Step 6: Final answer
   x = 12,861.95