Finding the Fourth Proportional to 5,386.50, 7,425.56 and 3,892.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,386.50 : 7,425.56 = 3,892.05 : x
2. Step 2: Convert to fraction form
   5,386.50/7,425.56 = 3,892.05/x
3. Step 3: Cross multiply
   5,386.50x = 7,425.56 × 3,892.05
4. Step 4: Simplify right side
   5,386.50x = 28,900,594.21
5. Step 5: Solve for x
   x = 28,900,594.21/5,386.50
6. Step 6: Final answer
   x = 5,365.38