Finding the Fourth Proportional to 10,498.95, 15,749.03 and 4,258.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,498.95 : 15,749.03 = 4,258.71 : x
2. Step 2: Convert to fraction form
   10,498.95/15,749.03 = 4,258.71/x
3. Step 3: Cross multiply
   10,498.95x = 15,749.03 × 4,258.71
4. Step 4: Simplify right side
   10,498.95x = 67,070,562.20
5. Step 5: Solve for x
   x = 67,070,562.20/10,498.95
6. Step 6: Final answer
   x = 6,388.31