Finding the Fourth Proportional to 3,935.34, 5,436.72 and 2,938.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,935.34 : 5,436.72 = 2,938.88 : x
2. Step 2: Convert to fraction form
   3,935.34/5,436.72 = 2,938.88/x
3. Step 3: Cross multiply
   3,935.34x = 5,436.72 × 2,938.88
4. Step 4: Simplify right side
   3,935.34x = 15,977,867.67
5. Step 5: Solve for x
   x = 15,977,867.67/3,935.34
6. Step 6: Final answer
   x = 4,060.10