Finding the Fourth Proportional to 11,384.73, 17,079.15 and 5,147.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,384.73 : 17,079.15 = 5,147.68 : x
2. Step 2: Convert to fraction form
   11,384.73/17,079.15 = 5,147.68/x
3. Step 3: Cross multiply
   11,384.73x = 17,079.15 × 5,147.68
4. Step 4: Simplify right side
   11,384.73x = 87,918,007.50
5. Step 5: Solve for x
   x = 87,918,007.50/11,384.73
6. Step 6: Final answer
   x = 7,722.45