Finding the Fourth Proportional to 8,989.03, 12,406.47 and 5,634.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,989.03 : 12,406.47 = 5,634.71 : x
2. Step 2: Convert to fraction form
   8,989.03/12,406.47 = 5,634.71/x
3. Step 3: Cross multiply
   8,989.03x = 12,406.47 × 5,634.71
4. Step 4: Simplify right side
   8,989.03x = 69,906,893.72
5. Step 5: Solve for x
   x = 69,906,893.72/8,989.03
6. Step 6: Final answer
   x = 7,776.92