Finding the Fourth Proportional to 16,131.90, 22,276.72 and 12,146.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,131.90 : 22,276.72 = 12,146.10 : x
2. Step 2: Convert to fraction form
   16,131.90/22,276.72 = 12,146.10/x
3. Step 3: Cross multiply
   16,131.90x = 22,276.72 × 12,146.10
4. Step 4: Simplify right side
   16,131.90x = 270,575,268.79
5. Step 5: Solve for x
   x = 270,575,268.79/16,131.90
6. Step 6: Final answer
   x = 16,772.68