Finding the Fourth Proportional to 7,011.34, 10,517 and 1,817.21

Step by Step Solution

1. Step 1: Write the proportion equation
   7,011.34 : 10,517 = 1,817.21 : x
2. Step 2: Convert to fraction form
   7,011.34/10,517 = 1,817.21/x
3. Step 3: Cross multiply
   7,011.34x = 10,517 × 1,817.21
4. Step 4: Simplify right side
   7,011.34x = 19,111,597.57
5. Step 5: Solve for x
   x = 19,111,597.57/7,011.34
6. Step 6: Final answer
   x = 2,725.81