Finding the Fourth Proportional to 15,103.47, 20,844.71 and 9,135.15

Step by Step Solution

1. Step 1: Write the proportion equation
   15,103.47 : 20,844.71 = 9,135.15 : x
2. Step 2: Convert to fraction form
   15,103.47/20,844.71 = 9,135.15/x
3. Step 3: Cross multiply
   15,103.47x = 20,844.71 × 9,135.15
4. Step 4: Simplify right side
   15,103.47x = 190,419,552.56
5. Step 5: Solve for x
   x = 190,419,552.56/15,103.47
6. Step 6: Final answer
   x = 12,607.67