Finding the Fourth Proportional to 13,268.91, 19,859.61 and 7,336.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,268.91 : 19,859.61 = 7,336.67 : x
2. Step 2: Convert to fraction form
   13,268.91/19,859.61 = 7,336.67/x
3. Step 3: Cross multiply
   13,268.91x = 19,859.61 × 7,336.67
4. Step 4: Simplify right side
   13,268.91x = 145,703,404.90
5. Step 5: Solve for x
   x = 145,703,404.90/13,268.91
6. Step 6: Final answer
   x = 10,980.81