Finding the Fourth Proportional to 12,655.98, 17,461.04 and 8,185.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,655.98 : 17,461.04 = 8,185.40 : x
2. Step 2: Convert to fraction form
   12,655.98/17,461.04 = 8,185.40/x
3. Step 3: Cross multiply
   12,655.98x = 17,461.04 × 8,185.40
4. Step 4: Simplify right side
   12,655.98x = 142,925,468.58
5. Step 5: Solve for x
   x = 142,925,468.58/12,655.98
6. Step 6: Final answer
   x = 11,293.12