Finding the Fourth Proportional to 7,111.16, 10,663.22 and 2,179.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.16 : 10,663.22 = 2,179.61 : x
2. Step 2: Convert to fraction form
   7,111.16/10,663.22 = 2,179.61/x
3. Step 3: Cross multiply
   7,111.16x = 10,663.22 × 2,179.61
4. Step 4: Simplify right side
   7,111.16x = 23,241,607.63
5. Step 5: Solve for x
   x = 23,241,607.63/7,111.16
6. Step 6: Final answer
   x = 3,268.33