Finding the Fourth Proportional to 13,322.69, 18,383.21 and 7,656.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,322.69 : 18,383.21 = 7,656.34 : x
2. Step 2: Convert to fraction form
   13,322.69/18,383.21 = 7,656.34/x
3. Step 3: Cross multiply
   13,322.69x = 18,383.21 × 7,656.34
4. Step 4: Simplify right side
   13,322.69x = 140,748,106.05
5. Step 5: Solve for x
   x = 140,748,106.05/13,322.69
6. Step 6: Final answer
   x = 10,564.54