Finding the Fourth Proportional to 11,964.02, 16,524.17 and 7,978.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,964.02 : 16,524.17 = 7,978.20 : x
2. Step 2: Convert to fraction form
   11,964.02/16,524.17 = 7,978.20/x
3. Step 3: Cross multiply
   11,964.02x = 16,524.17 × 7,978.20
4. Step 4: Simplify right side
   11,964.02x = 131,833,093.20
5. Step 5: Solve for x
   x = 131,833,093.20/11,964.02
6. Step 6: Final answer
   x = 11,019.13