Finding the Fourth Proportional to 5,076.24, 7,002.72 and 3,186.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,076.24 : 7,002.72 = 3,186.88 : x
2. Step 2: Convert to fraction form
   5,076.24/7,002.72 = 3,186.88/x
3. Step 3: Cross multiply
   5,076.24x = 7,002.72 × 3,186.88
4. Step 4: Simplify right side
   5,076.24x = 22,316,828.31
5. Step 5: Solve for x
   x = 22,316,828.31/5,076.24
6. Step 6: Final answer
   x = 4,396.33