Finding the Fourth Proportional to 11,116.65, 16,656.46 and 7,822.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,116.65 : 16,656.46 = 7,822.82 : x
2. Step 2: Convert to fraction form
   11,116.65/16,656.46 = 7,822.82/x
3. Step 3: Cross multiply
   11,116.65x = 16,656.46 × 7,822.82
4. Step 4: Simplify right side
   11,116.65x = 130,300,488.42
5. Step 5: Solve for x
   x = 130,300,488.42/11,116.65
6. Step 6: Final answer
   x = 11,721.20