Finding the Fourth Proportional to 11,678.48, 16,123.56 and 7,431.92

Step by Step Solution

1. Step 1: Write the proportion equation
   11,678.48 : 16,123.56 = 7,431.92 : x
2. Step 2: Convert to fraction form
   11,678.48/16,123.56 = 7,431.92/x
3. Step 3: Cross multiply
   11,678.48x = 16,123.56 × 7,431.92
4. Step 4: Simplify right side
   11,678.48x = 119,829,008.04
5. Step 5: Solve for x
   x = 119,829,008.04/11,678.48
6. Step 6: Final answer
   x = 10,260.67