Finding the Fourth Proportional to 15,300.17, 21,114.57 and 8,586.29

Step by Step Solution

1. Step 1: Write the proportion equation
   15,300.17 : 21,114.57 = 8,586.29 : x
2. Step 2: Convert to fraction form
   15,300.17/21,114.57 = 8,586.29/x
3. Step 3: Cross multiply
   15,300.17x = 21,114.57 × 8,586.29
4. Step 4: Simplify right side
   15,300.17x = 181,295,821.25
5. Step 5: Solve for x
   x = 181,295,821.25/15,300.17
6. Step 6: Final answer
   x = 11,849.27