Finding the Fourth Proportional to 11,628.72, 17,439.99 and 5,053.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,628.72 : 17,439.99 = 5,053.37 : x
2. Step 2: Convert to fraction form
   11,628.72/17,439.99 = 5,053.37/x
3. Step 3: Cross multiply
   11,628.72x = 17,439.99 × 5,053.37
4. Step 4: Simplify right side
   11,628.72x = 88,130,635.07
5. Step 5: Solve for x
   x = 88,130,635.07/11,628.72
6. Step 6: Final answer
   x = 7,578.70