Finding the Fourth Proportional to 3,333.12, 5,002.72 and 2,102.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,333.12 : 5,002.72 = 2,102.72 : x
2. Step 2: Convert to fraction form
   3,333.12/5,002.72 = 2,102.72/x
3. Step 3: Cross multiply
   3,333.12x = 5,002.72 × 2,102.72
4. Step 4: Simplify right side
   3,333.12x = 10,519,319.40
5. Step 5: Solve for x
   x = 10,519,319.40/3,333.12
6. Step 6: Final answer
   x = 3,156.00