Finding the Fourth Proportional to 7,111.56, 10,665.37 and 2,178.46

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.56 : 10,665.37 = 2,178.46 : x
2. Step 2: Convert to fraction form
   7,111.56/10,665.37 = 2,178.46/x
3. Step 3: Cross multiply
   7,111.56x = 10,665.37 × 2,178.46
4. Step 4: Simplify right side
   7,111.56x = 23,234,097.98
5. Step 5: Solve for x
   x = 23,234,097.98/7,111.56
6. Step 6: Final answer
   x = 3,267.09