Finding the Fourth Proportional to 4,253.76, 5,870.24 and 2,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,253.76 : 5,870.24 = 2,390.72 : x
2. Step 2: Convert to fraction form
   4,253.76/5,870.24 = 2,390.72/x
3. Step 3: Cross multiply
   4,253.76x = 5,870.24 × 2,390.72
4. Step 4: Simplify right side
   4,253.76x = 14,034,100.17
5. Step 5: Solve for x
   x = 14,034,100.17/4,253.76
6. Step 6: Final answer
   x = 3,299.22