Finding the Fourth Proportional to 3,498.18, 5,248.17 and 2,120.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,498.18 : 5,248.17 = 2,120.37 : x
2. Step 2: Convert to fraction form
   3,498.18/5,248.17 = 2,120.37/x
3. Step 3: Cross multiply
   3,498.18x = 5,248.17 × 2,120.37
4. Step 4: Simplify right side
   3,498.18x = 11,128,062.22
5. Step 5: Solve for x
   x = 11,128,062.22/3,498.18
6. Step 6: Final answer
   x = 3,181.10