Finding the Fourth Proportional to 15,298.06, 21,112.42 and 8,584.34

Step by Step Solution

1. Step 1: Write the proportion equation
   15,298.06 : 21,112.42 = 8,584.34 : x
2. Step 2: Convert to fraction form
   15,298.06/21,112.42 = 8,584.34/x
3. Step 3: Cross multiply
   15,298.06x = 21,112.42 × 8,584.34
4. Step 4: Simplify right side
   15,298.06x = 181,236,191.50
5. Step 5: Solve for x
   x = 181,236,191.50/15,298.06
6. Step 6: Final answer
   x = 11,847.00