Finding the Fourth Proportional to 9,020.93, 12,440.81 and 5,664.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,020.93 : 12,440.81 = 5,664.05 : x
2. Step 2: Convert to fraction form
   9,020.93/12,440.81 = 5,664.05/x
3. Step 3: Cross multiply
   9,020.93x = 12,440.81 × 5,664.05
4. Step 4: Simplify right side
   9,020.93x = 70,465,415.14
5. Step 5: Solve for x
   x = 70,465,415.14/9,020.93
6. Step 6: Final answer
   x = 7,811.33