Finding the Fourth Proportional to 12,611.30, 17,397.59 and 8,132.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,611.30 : 17,397.59 = 8,132.81 : x
2. Step 2: Convert to fraction form
   12,611.30/17,397.59 = 8,132.81/x
3. Step 3: Cross multiply
   12,611.30x = 17,397.59 × 8,132.81
4. Step 4: Simplify right side
   12,611.30x = 141,491,166.28
5. Step 5: Solve for x
   x = 141,491,166.28/12,611.30
6. Step 6: Final answer
   x = 11,219.40