Finding the Fourth Proportional to 11,956.86, 16,496.01 and 7,478.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,956.86 : 16,496.01 = 7,478.91 : x
2. Step 2: Convert to fraction form
   11,956.86/16,496.01 = 7,478.91/x
3. Step 3: Cross multiply
   11,956.86x = 16,496.01 × 7,478.91
4. Step 4: Simplify right side
   11,956.86x = 123,372,174.15
5. Step 5: Solve for x
   x = 123,372,174.15/11,956.86
6. Step 6: Final answer
   x = 10,318.11