Finding the Fourth Proportional to 9,639.37, 13,300.92 and 5,661.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,639.37 : 13,300.92 = 5,661.77 : x
2. Step 2: Convert to fraction form
   9,639.37/13,300.92 = 5,661.77/x
3. Step 3: Cross multiply
   9,639.37x = 13,300.92 × 5,661.77
4. Step 4: Simplify right side
   9,639.37x = 75,306,683.32
5. Step 5: Solve for x
   x = 75,306,683.32/9,639.37
6. Step 6: Final answer
   x = 7,812.41