Finding the Fourth Proportional to 8,991.40, 13,477.69 and 3,066.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,991.40 : 13,477.69 = 3,066.21 : x
2. Step 2: Convert to fraction form
   8,991.40/13,477.69 = 3,066.21/x
3. Step 3: Cross multiply
   8,991.40x = 13,477.69 × 3,066.21
4. Step 4: Simplify right side
   8,991.40x = 41,325,406.27
5. Step 5: Solve for x
   x = 41,325,406.27/8,991.40
6. Step 6: Final answer
   x = 4,596.11