Finding the Fourth Proportional to 3,948.75, 5,892.50 and 3,423.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,948.75 : 5,892.50 = 3,423.87 : x
2. Step 2: Convert to fraction form
   3,948.75/5,892.50 = 3,423.87/x
3. Step 3: Cross multiply
   3,948.75x = 5,892.50 × 3,423.87
4. Step 4: Simplify right side
   3,948.75x = 20,175,143.28
5. Step 5: Solve for x
   x = 20,175,143.28/3,948.75
6. Step 6: Final answer
   x = 5,109.25