Finding the Fourth Proportional to 19,123.68, 28,674.37 and 7,423.23

Step by Step Solution

1. Step 1: Write the proportion equation
   19,123.68 : 28,674.37 = 7,423.23 : x
2. Step 2: Convert to fraction form
   19,123.68/28,674.37 = 7,423.23/x
3. Step 3: Cross multiply
   19,123.68x = 28,674.37 × 7,423.23
4. Step 4: Simplify right side
   19,123.68x = 212,856,443.62
5. Step 5: Solve for x
   x = 212,856,443.62/19,123.68
6. Step 6: Final answer
   x = 11,130.52