Finding the Fourth Proportional to 9,015.64, 12,449.50 and 5,664.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,015.64 : 12,449.50 = 5,664.26 : x
2. Step 2: Convert to fraction form
   9,015.64/12,449.50 = 5,664.26/x
3. Step 3: Cross multiply
   9,015.64x = 12,449.50 × 5,664.26
4. Step 4: Simplify right side
   9,015.64x = 70,517,221.83
5. Step 5: Solve for x
   x = 70,517,221.83/9,015.64
6. Step 6: Final answer
   x = 7,821.66