Finding the Fourth Proportional to 12,984.28, 17,915.41 and 7,948.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,984.28 : 17,915.41 = 7,948.10 : x
2. Step 2: Convert to fraction form
   12,984.28/17,915.41 = 7,948.10/x
3. Step 3: Cross multiply
   12,984.28x = 17,915.41 × 7,948.10
4. Step 4: Simplify right side
   12,984.28x = 142,393,524.94
5. Step 5: Solve for x
   x = 142,393,524.94/12,984.28
6. Step 6: Final answer
   x = 10,966.61