Finding the Fourth Proportional to 11,116.48, 16,672.56 and 4,189.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,116.48 : 16,672.56 = 4,189.60 : x
2. Step 2: Convert to fraction form
   11,116.48/16,672.56 = 4,189.60/x
3. Step 3: Cross multiply
   11,116.48x = 16,672.56 × 4,189.60
4. Step 4: Simplify right side
   11,116.48x = 69,851,357.38
5. Step 5: Solve for x
   x = 69,851,357.38/11,116.48
6. Step 6: Final answer
   x = 6,283.59