Finding the Fourth Proportional to 6,636.47, 9,918.48 and 6,111.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,636.47 : 9,918.48 = 6,111.05 : x
2. Step 2: Convert to fraction form
   6,636.47/9,918.48 = 6,111.05/x
3. Step 3: Cross multiply
   6,636.47x = 9,918.48 × 6,111.05
4. Step 4: Simplify right side
   6,636.47x = 60,612,300.53
5. Step 5: Solve for x
   x = 60,612,300.53/6,636.47
6. Step 6: Final answer
   x = 9,133.22