Finding the Fourth Proportional to 12,515.31, 17,271.15 and 7,210.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,515.31 : 17,271.15 = 7,210.17 : x
2. Step 2: Convert to fraction form
   12,515.31/17,271.15 = 7,210.17/x
3. Step 3: Cross multiply
   12,515.31x = 17,271.15 × 7,210.17
4. Step 4: Simplify right side
   12,515.31x = 124,527,927.60
5. Step 5: Solve for x
   x = 124,527,927.60/12,515.31
6. Step 6: Final answer
   x = 9,950.05