Finding the Fourth Proportional to 7,108.89, 10,664.84 and 2,178.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,108.89 : 10,664.84 = 2,178.37 : x
2. Step 2: Convert to fraction form
   7,108.89/10,664.84 = 2,178.37/x
3. Step 3: Cross multiply
   7,108.89x = 10,664.84 × 2,178.37
4. Step 4: Simplify right side
   7,108.89x = 23,231,967.51
5. Step 5: Solve for x
   x = 23,231,967.51/7,108.89
6. Step 6: Final answer
   x = 3,268.02