Finding the Fourth Proportional to 10,118.42, 15,175.19 and 5,185.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,118.42 : 15,175.19 = 5,185.52 : x
2. Step 2: Convert to fraction form
   10,118.42/15,175.19 = 5,185.52/x
3. Step 3: Cross multiply
   10,118.42x = 15,175.19 × 5,185.52
4. Step 4: Simplify right side
   10,118.42x = 78,691,149.45
5. Step 5: Solve for x
   x = 78,691,149.45/10,118.42
6. Step 6: Final answer
   x = 7,777.02