Finding the Fourth Proportional to 5,076.42, 7,003.26 and 3,186.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,076.42 : 7,003.26 = 3,186.72 : x
2. Step 2: Convert to fraction form
   5,076.42/7,003.26 = 3,186.72/x
3. Step 3: Cross multiply
   5,076.42x = 7,003.26 × 3,186.72
4. Step 4: Simplify right side
   5,076.42x = 22,317,428.71
5. Step 5: Solve for x
   x = 22,317,428.71/5,076.42
6. Step 6: Final answer
   x = 4,396.29