Finding the Fourth Proportional to 28,128.93, 42,172.59 and 17,033.01

Step by Step Solution

1. Step 1: Write the proportion equation
   28,128.93 : 42,172.59 = 17,033.01 : x
2. Step 2: Convert to fraction form
   28,128.93/42,172.59 = 17,033.01/x
3. Step 3: Cross multiply
   28,128.93x = 42,172.59 × 17,033.01
4. Step 4: Simplify right side
   28,128.93x = 718,326,147.20
5. Step 5: Solve for x
   x = 718,326,147.20/28,128.93
6. Step 6: Final answer
   x = 25,536.92