Finding the Fourth Proportional to 7,123.12, 10,684.73 and 2,192.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,123.12 : 10,684.73 = 2,192.80 : x
2. Step 2: Convert to fraction form
   7,123.12/10,684.73 = 2,192.80/x
3. Step 3: Cross multiply
   7,123.12x = 10,684.73 × 2,192.80
4. Step 4: Simplify right side
   7,123.12x = 23,429,454.71
5. Step 5: Solve for x
   x = 23,429,454.71/7,123.12
6. Step 6: Final answer
   x = 3,289.21