Finding the Fourth Proportional to 7,002.72, 10,500.42 and 2,071.74

Step by Step Solution

1. Step 1: Write the proportion equation
   7,002.72 : 10,500.42 = 2,071.74 : x
2. Step 2: Convert to fraction form
   7,002.72/10,500.42 = 2,071.74/x
3. Step 3: Cross multiply
   7,002.72x = 10,500.42 × 2,071.74
4. Step 4: Simplify right side
   7,002.72x = 21,754,140.13
5. Step 5: Solve for x
   x = 21,754,140.13/7,002.72
6. Step 6: Final answer
   x = 3,106.53