Finding the Fourth Proportional to 3,642.96, 5,029.12 and 2,151.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,642.96 : 5,029.12 = 2,151.35 : x
2. Step 2: Convert to fraction form
   3,642.96/5,029.12 = 2,151.35/x
3. Step 3: Cross multiply
   3,642.96x = 5,029.12 × 2,151.35
4. Step 4: Simplify right side
   3,642.96x = 10,819,397.31
5. Step 5: Solve for x
   x = 10,819,397.31/3,642.96
6. Step 6: Final answer
   x = 2,969.95