Finding the Fourth Proportional to 28,503.33, 39,345.57 and 25,513.89

Step by Step Solution

1. Step 1: Write the proportion equation
   28,503.33 : 39,345.57 = 25,513.89 : x
2. Step 2: Convert to fraction form
   28,503.33/39,345.57 = 25,513.89/x
3. Step 3: Cross multiply
   28,503.33x = 39,345.57 × 25,513.89
4. Step 4: Simplify right side
   28,503.33x = 1,003,858,544.97
5. Step 5: Solve for x
   x = 1,003,858,544.97/28,503.33
6. Step 6: Final answer
   x = 35,218.99