Finding the Fourth Proportional to 11,322.72, 16,978.62 and 4,747.14

Step by Step Solution

1. Step 1: Write the proportion equation
   11,322.72 : 16,978.62 = 4,747.14 : x
2. Step 2: Convert to fraction form
   11,322.72/16,978.62 = 4,747.14/x
3. Step 3: Cross multiply
   11,322.72x = 16,978.62 × 4,747.14
4. Step 4: Simplify right side
   11,322.72x = 80,599,886.15
5. Step 5: Solve for x
   x = 80,599,886.15/11,322.72
6. Step 6: Final answer
   x = 7,118.42