Finding the Fourth Proportional to 9,003.09, 13,508.69 and 5,715.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,003.09 : 13,508.69 = 5,715.30 : x
2. Step 2: Convert to fraction form
   9,003.09/13,508.69 = 5,715.30/x
3. Step 3: Cross multiply
   9,003.09x = 13,508.69 × 5,715.30
4. Step 4: Simplify right side
   9,003.09x = 77,206,187.38
5. Step 5: Solve for x
   x = 77,206,187.38/9,003.09
6. Step 6: Final answer
   x = 8,575.52