Finding the Fourth Proportional to 6,986.02, 9,630.76 and 5,557.18

Step by Step Solution

1. Step 1: Write the proportion equation
   6,986.02 : 9,630.76 = 5,557.18 : x
2. Step 2: Convert to fraction form
   6,986.02/9,630.76 = 5,557.18/x
3. Step 3: Cross multiply
   6,986.02x = 9,630.76 × 5,557.18
4. Step 4: Simplify right side
   6,986.02x = 53,519,866.86
5. Step 5: Solve for x
   x = 53,519,866.86/6,986.02
6. Step 6: Final answer
   x = 7,661.00