Finding the Fourth Proportional to 11,707.56, 17,559.61 and 4,310.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,707.56 : 17,559.61 = 4,310.30 : x
2. Step 2: Convert to fraction form
   11,707.56/17,559.61 = 4,310.30/x
3. Step 3: Cross multiply
   11,707.56x = 17,559.61 × 4,310.30
4. Step 4: Simplify right side
   11,707.56x = 75,687,077.63
5. Step 5: Solve for x
   x = 75,687,077.63/11,707.56
6. Step 6: Final answer
   x = 6,464.81