Finding the Fourth Proportional to 13,328.59, 19,992.20 and 5,007.97

Step by Step Solution

1. Step 1: Write the proportion equation
   13,328.59 : 19,992.20 = 5,007.97 : x
2. Step 2: Convert to fraction form
   13,328.59/19,992.20 = 5,007.97/x
3. Step 3: Cross multiply
   13,328.59x = 19,992.20 × 5,007.97
4. Step 4: Simplify right side
   13,328.59x = 100,120,253.50
5. Step 5: Solve for x
   x = 100,120,253.50/13,328.59
6. Step 6: Final answer
   x = 7,511.69