Finding the Fourth Proportional to 8,091.90, 11,164.50 and 5,574.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,091.90 : 11,164.50 = 5,574.69 : x
2. Step 2: Convert to fraction form
   8,091.90/11,164.50 = 5,574.69/x
3. Step 3: Cross multiply
   8,091.90x = 11,164.50 × 5,574.69
4. Step 4: Simplify right side
   8,091.90x = 62,238,626.51
5. Step 5: Solve for x
   x = 62,238,626.51/8,091.90
6. Step 6: Final answer
   x = 7,691.47