Finding the Fourth Proportional to 13,333.91, 18,400.25 and 7,668.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,333.91 : 18,400.25 = 7,668.23 : x
2. Step 2: Convert to fraction form
   13,333.91/18,400.25 = 7,668.23/x
3. Step 3: Cross multiply
   13,333.91x = 18,400.25 × 7,668.23
4. Step 4: Simplify right side
   13,333.91x = 141,097,310.72
5. Step 5: Solve for x
   x = 141,097,310.72/13,333.91
6. Step 6: Final answer
   x = 10,581.84