Finding the Fourth Proportional to 12,741.30, 17,584.61 and 7,705.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,741.30 : 17,584.61 = 7,705.55 : x
2. Step 2: Convert to fraction form
   12,741.30/17,584.61 = 7,705.55/x
3. Step 3: Cross multiply
   12,741.30x = 17,584.61 × 7,705.55
4. Step 4: Simplify right side
   12,741.30x = 135,499,091.59
5. Step 5: Solve for x
   x = 135,499,091.59/12,741.30
6. Step 6: Final answer
   x = 10,634.64