Finding the Fourth Proportional to 12,077.82, 18,110.88 and 7,081.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,077.82 : 18,110.88 = 7,081.56 : x
2. Step 2: Convert to fraction form
   12,077.82/18,110.88 = 7,081.56/x
3. Step 3: Cross multiply
   12,077.82x = 18,110.88 × 7,081.56
4. Step 4: Simplify right side
   12,077.82x = 128,253,283.37
5. Step 5: Solve for x
   x = 128,253,283.37/12,077.82
6. Step 6: Final answer
   x = 10,618.91