Finding the Fourth Proportional to 16,756, 23,128.10 and 13,422.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,756 : 23,128.10 = 13,422.04 : x
2. Step 2: Convert to fraction form
   16,756/23,128.10 = 13,422.04/x
3. Step 3: Cross multiply
   16,756x = 23,128.10 × 13,422.04
4. Step 4: Simplify right side
   16,756x = 310,426,283.32
5. Step 5: Solve for x
   x = 310,426,283.32/16,756
6. Step 6: Final answer
   x = 18,526.28