Finding the Fourth Proportional to 10,185.28, 15,273.60 and 3,613.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,185.28 : 15,273.60 = 3,613.12 : x
2. Step 2: Convert to fraction form
   10,185.28/15,273.60 = 3,613.12/x
3. Step 3: Cross multiply
   10,185.28x = 15,273.60 × 3,613.12
4. Step 4: Simplify right side
   10,185.28x = 55,185,349.63
5. Step 5: Solve for x
   x = 55,185,349.63/10,185.28
6. Step 6: Final answer
   x = 5,418.15