Finding the Fourth Proportional to 6,540.42, 9,026.94 and 3,888.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,540.42 : 9,026.94 = 3,888.72 : x
2. Step 2: Convert to fraction form
   6,540.42/9,026.94 = 3,888.72/x
3. Step 3: Cross multiply
   6,540.42x = 9,026.94 × 3,888.72
4. Step 4: Simplify right side
   6,540.42x = 35,103,242.12
5. Step 5: Solve for x
   x = 35,103,242.12/6,540.42
6. Step 6: Final answer
   x = 5,367.12