Finding the Fourth Proportional to 3,713.54, 5,124.56 and 2,120.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,713.54 : 5,124.56 = 2,120.15 : x
2. Step 2: Convert to fraction form
   3,713.54/5,124.56 = 2,120.15/x
3. Step 3: Cross multiply
   3,713.54x = 5,124.56 × 2,120.15
4. Step 4: Simplify right side
   3,713.54x = 10,864,854.00
5. Step 5: Solve for x
   x = 10,864,854.00/3,713.54
6. Step 6: Final answer
   x = 2,925.74