Finding the Fourth Proportional to 15,298.17, 21,111.81 and 8,584.29

Step by Step Solution

1. Step 1: Write the proportion equation
   15,298.17 : 21,111.81 = 8,584.29 : x
2. Step 2: Convert to fraction form
   15,298.17/21,111.81 = 8,584.29/x
3. Step 3: Cross multiply
   15,298.17x = 21,111.81 × 8,584.29
4. Step 4: Simplify right side
   15,298.17x = 181,229,750.98
5. Step 5: Solve for x
   x = 181,229,750.98/15,298.17
6. Step 6: Final answer
   x = 11,846.50