Finding the Fourth Proportional to 3,498.86, 5,248.56 and 2,113.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,498.86 : 5,248.56 = 2,113.76 : x
2. Step 2: Convert to fraction form
   3,498.86/5,248.56 = 2,113.76/x
3. Step 3: Cross multiply
   3,498.86x = 5,248.56 × 2,113.76
4. Step 4: Simplify right side
   3,498.86x = 11,094,196.19
5. Step 5: Solve for x
   x = 11,094,196.19/3,498.86
6. Step 6: Final answer
   x = 3,170.80