Finding the Fourth Proportional to 16,131.20, 22,259.52 and 9,056

Step by Step Solution

1. Step 1: Write the proportion equation
   16,131.20 : 22,259.52 = 9,056 : x
2. Step 2: Convert to fraction form
   16,131.20/22,259.52 = 9,056/x
3. Step 3: Cross multiply
   16,131.20x = 22,259.52 × 9,056
4. Step 4: Simplify right side
   16,131.20x = 201,582,213.12
5. Step 5: Solve for x
   x = 201,582,213.12/16,131.20
6. Step 6: Final answer
   x = 12,496.42