Finding the Fourth Proportional to 11,028.76, 15,204.78 and 7,485.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,028.76 : 15,204.78 = 7,485.82 : x
2. Step 2: Convert to fraction form
   11,028.76/15,204.78 = 7,485.82/x
3. Step 3: Cross multiply
   11,028.76x = 15,204.78 × 7,485.82
4. Step 4: Simplify right side
   11,028.76x = 113,820,208.21
5. Step 5: Solve for x
   x = 113,820,208.21/11,028.76
6. Step 6: Final answer
   x = 10,320.31