Finding the Fourth Proportional to 10,498.39, 15,749.81 and 3,478.01

Step by Step Solution

1. Step 1: Write the proportion equation
   10,498.39 : 15,749.81 = 3,478.01 : x
2. Step 2: Convert to fraction form
   10,498.39/15,749.81 = 3,478.01/x
3. Step 3: Cross multiply
   10,498.39x = 15,749.81 × 3,478.01
4. Step 4: Simplify right side
   10,498.39x = 54,777,996.68
5. Step 5: Solve for x
   x = 54,777,996.68/10,498.39
6. Step 6: Final answer
   x = 5,217.75