Finding the Fourth Proportional to 8,136.32, 12,214.56 and 8,098.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,136.32 : 12,214.56 = 8,098.88 : x
2. Step 2: Convert to fraction form
   8,136.32/12,214.56 = 8,098.88/x
3. Step 3: Cross multiply
   8,136.32x = 12,214.56 × 8,098.88
4. Step 4: Simplify right side
   8,136.32x = 98,924,255.69
5. Step 5: Solve for x
   x = 98,924,255.69/8,136.32
6. Step 6: Final answer
   x = 12,158.35