Finding the Fourth Proportional to 11,078.37, 16,606.71 and 7,118.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,078.37 : 16,606.71 = 7,118.55 : x
2. Step 2: Convert to fraction form
   11,078.37/16,606.71 = 7,118.55/x
3. Step 3: Cross multiply
   11,078.37x = 16,606.71 × 7,118.55
4. Step 4: Simplify right side
   11,078.37x = 118,215,695.47
5. Step 5: Solve for x
   x = 118,215,695.47/11,078.37
6. Step 6: Final answer
   x = 10,670.86