Finding the Fourth Proportional to 28,016.99, 42,031.25 and 19,256.03

Step by Step Solution

1. Step 1: Write the proportion equation
   28,016.99 : 42,031.25 = 19,256.03 : x
2. Step 2: Convert to fraction form
   28,016.99/42,031.25 = 19,256.03/x
3. Step 3: Cross multiply
   28,016.99x = 42,031.25 × 19,256.03
4. Step 4: Simplify right side
   28,016.99x = 809,354,914.66
5. Step 5: Solve for x
   x = 809,354,914.66/28,016.99
6. Step 6: Final answer
   x = 28,888.00