Finding the Fourth Proportional to 31,034.64, 42,828.57 and 16,888.26

Step by Step Solution

1. Step 1: Write the proportion equation
   31,034.64 : 42,828.57 = 16,888.26 : x
2. Step 2: Convert to fraction form
   31,034.64/42,828.57 = 16,888.26/x
3. Step 3: Cross multiply
   31,034.64x = 42,828.57 × 16,888.26
4. Step 4: Simplify right side
   31,034.64x = 723,300,025.59
5. Step 5: Solve for x
   x = 723,300,025.59/31,034.64
6. Step 6: Final answer
   x = 23,306.22