Finding the Fourth Proportional to 5,165.82, 7,742.52 and 2,388.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,165.82 : 7,742.52 = 2,388.72 : x
2. Step 2: Convert to fraction form
   5,165.82/7,742.52 = 2,388.72/x
3. Step 3: Cross multiply
   5,165.82x = 7,742.52 × 2,388.72
4. Step 4: Simplify right side
   5,165.82x = 18,494,712.37
5. Step 5: Solve for x
   x = 18,494,712.37/5,165.82
6. Step 6: Final answer
   x = 3,580.21