Finding the Fourth Proportional to 11,947.33, 16,485.37 and 6,642.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,947.33 : 16,485.37 = 6,642.01 : x
2. Step 2: Convert to fraction form
   11,947.33/16,485.37 = 6,642.01/x
3. Step 3: Cross multiply
   11,947.33x = 16,485.37 × 6,642.01
4. Step 4: Simplify right side
   11,947.33x = 109,495,992.39
5. Step 5: Solve for x
   x = 109,495,992.39/11,947.33
6. Step 6: Final answer
   x = 9,164.89