Finding the Fourth Proportional to 13,288.72, 19,923.84 and 5,889.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,288.72 : 19,923.84 = 5,889.12 : x
2. Step 2: Convert to fraction form
   13,288.72/19,923.84 = 5,889.12/x
3. Step 3: Cross multiply
   13,288.72x = 19,923.84 × 5,889.12
4. Step 4: Simplify right side
   13,288.72x = 117,333,884.62
5. Step 5: Solve for x
   x = 117,333,884.62/13,288.72
6. Step 6: Final answer
   x = 8,829.59