Finding the Fourth Proportional to 3,948.89, 5,894.53 and 3,642.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,948.89 : 5,894.53 = 3,642.71 : x
2. Step 2: Convert to fraction form
   3,948.89/5,894.53 = 3,642.71/x
3. Step 3: Cross multiply
   3,948.89x = 5,894.53 × 3,642.71
4. Step 4: Simplify right side
   3,948.89x = 21,472,069.01
5. Step 5: Solve for x
   x = 21,472,069.01/3,948.89
6. Step 6: Final answer
   x = 5,437.49