Finding the Fourth Proportional to 9,659.86, 13,323.29 and 8,317.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,659.86 : 13,323.29 = 8,317.77 : x
2. Step 2: Convert to fraction form
   9,659.86/13,323.29 = 8,317.77/x
3. Step 3: Cross multiply
   9,659.86x = 13,323.29 × 8,317.77
4. Step 4: Simplify right side
   9,659.86x = 110,819,970.31
5. Step 5: Solve for x
   x = 110,819,970.31/9,659.86
6. Step 6: Final answer
   x = 11,472.22