Finding the Fourth Proportional to 12,950.71, 17,872.05 and 7,648.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,950.71 : 17,872.05 = 7,648.14 : x
2. Step 2: Convert to fraction form
   12,950.71/17,872.05 = 7,648.14/x
3. Step 3: Cross multiply
   12,950.71x = 17,872.05 × 7,648.14
4. Step 4: Simplify right side
   12,950.71x = 136,687,902.25
5. Step 5: Solve for x
   x = 136,687,902.25/12,950.71
6. Step 6: Final answer
   x = 10,554.48