Finding the Fourth Proportional to 8,791.74, 12,130.56 and 5,647.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,791.74 : 12,130.56 = 5,647.32 : x
2. Step 2: Convert to fraction form
   8,791.74/12,130.56 = 5,647.32/x
3. Step 3: Cross multiply
   8,791.74x = 12,130.56 × 5,647.32
4. Step 4: Simplify right side
   8,791.74x = 68,505,154.10
5. Step 5: Solve for x
   x = 68,505,154.10/8,791.74
6. Step 6: Final answer
   x = 7,791.99