Finding the Fourth Proportional to 7,109.23, 10,663.46 and 2,178.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,109.23 : 10,663.46 = 2,178.89 : x
2. Step 2: Convert to fraction form
   7,109.23/10,663.46 = 2,178.89/x
3. Step 3: Cross multiply
   7,109.23x = 10,663.46 × 2,178.89
4. Step 4: Simplify right side
   7,109.23x = 23,234,442.15
5. Step 5: Solve for x
   x = 23,234,442.15/7,109.23
6. Step 6: Final answer
   x = 3,268.21