Finding the Fourth Proportional to 13,323.20, 18,383.90 and 7,656.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,323.20 : 18,383.90 = 7,656.84 : x
2. Step 2: Convert to fraction form
   13,323.20/18,383.90 = 7,656.84/x
3. Step 3: Cross multiply
   13,323.20x = 18,383.90 × 7,656.84
4. Step 4: Simplify right side
   13,323.20x = 140,762,542.59
5. Step 5: Solve for x
   x = 140,762,542.59/13,323.20
6. Step 6: Final answer
   x = 10,565.22